Russian President Vladimir Putin's "special military operation" into neighboring Ukraine began on Feb. 24, with Russian forces invading from Belarus, to the north, and Russia, to the east. Ukrainian troops have offered "stiff resistance," according to U.S. officials.
The Russian military has since launched a full-scale ground offensive in eastern Ukraine's disputed Donbas region, capturing the strategic port city of Mariupol and securing a coastal corridor to the Moscow-annexed Crimean Peninsula.
A look at the two leaders at the center of the war in Ukraine and how they both rose to power, the difference in their leadership and what led to this moment in history.
Here's how the news is developing. All times Eastern.
May 10, 2022, 3:23 PM EDT
House expected to vote on nearly $40 billion Ukraine aid package
The House will vote on a new roughly $40 billion Ukraine aid package Tuesday night, House Speaker Nancy Pelosi announced.
The request includes funding for "critically needed resources, including military aid, support for the Ukrainian economy, and humanitarian assistance for food security to address the worldwide hunger crisis."
A Ukrainian refugee from the Azovstal steel plant in Mariupol arrives at a registration and humanitarian aid centre for internally displaced people in Zaporizhzhia, Ukraine, May 8, 2022.
Gleb Garanich/Reuters
Ukrainian soldier Glib Stryzhko, 25, lies in a hospital bed in Zaporizhzhia, Ukraine on May 7, 2022. Gravely wounded in intense fighting in Mariupol, Stryzhko was captured in April and eventually taken to Russia before suddenly being put on a plane and sent home with others to be swapped for Russian prisoners.
Dimitar Dilkoff/AFP via Getty Images
The White House had initially requested $33 billion in assistance for Ukraine, but congressional leaders decided to tack on an additional $7 billion for more military and humanitarian assistance.
"This package, which builds on the robust support already secured by Congress, will be pivotal in helping Ukraine defend not only its nation but democracy for the world. Time is of the essence – and we cannot afford to wait," Pelosi said in a letter to colleagues. "With this aid package, America sends a resounding message to the world of our unwavering determination to stand with the courageous people of Ukraine until victory is won."
The bill is expected to pass in the House, after which it would head to the Senate.
-ABC News'Mariam Khan
May 10, 2022, 3:10 PM EDT
Pelosi, lawmakers to brief Biden on trip to Ukraine
President Joe Biden will host House Speaker Nancy Pelosi and other members of Congress in the Situation Room on Tuesday afternoon to discuss the lawmakers' recent trip to Ukraine, according to White House press secretary Jen Psaki.
Biden previously spoke with Pelosi over the phone about her trip but wanted a more thorough discussion in person, Psaki said.
President of Ukraine Volodymyr Zelensky presents the Order of Princess Olga to US Speaker of the House of Representatives Nancy Pelosi for "her significant personal contribution to strengthening Ukrainian-American interstate cooperation and supporting sovereign, independent and democratic Ukraine" during their meeting in Kyiv, May 1, 2022.
Ukrainian Presidential Service/AFP via Getty Images
Expected to attend are: Rep. Jim McGovern, D-Mass.; Rep. Gregory Meeks, D-NY; Rep. Adam Schiff, D-Calif.; Rep. Barbara Lee, D-Calif.; Rep. Bill Keating, D-Mass.; and Rep. Jason Crow, D-Colo.
-ABC News'Ben Gittleson and Mariam Khan
May 10, 2022, 2:59 PM EDT
Putin has goals beyond Donbas, US says
Russian President Vladimir Putin "is preparing for prolonged conflict in Ukraine during which he still intends to achieve goals beyond the Donbas," according to Director of National Intelligence Avril Haines.
"The next month or two of fighting will be significant as the Russians attempt to reinvigorate their efforts. But even if they are successful, we are not confident that the fight in the Donbas will effectively end the war," Haines told senators at an Armed Services Committee hearing Tuesday.
Onlookers take pictures in front of the shopping and entertainment center in the Ukrainian Black Sea city of Odessa on May 10, 2022, destroyed after Russian missiles strike late on May 9, 2022.
Oleksandr Gimanov/AFP via Getty Images
For now, Putin's goal is to take control of the Donetsk and Luhansk oblasts and encircle Ukrainian forces from the north and south of the Donbas "in order to crush the most capable and well-equipped Ukrainian forces who are fighting to hold the line in the East," Haines said.
Putin also hopes to "consolidate control of the land bridge Russia has established from Crimea to the Donbas, occupy Kherson, and control the water source for Crimea," Haines said. The U.S. sees indications his military wants to extend that land bridge to Transnistria in Moldova, she added.
Haines said Russia might be capable of achieving "most" of those goals in the coming months. However, "We believe that they will not be able to extend control over a land bridge that stretches to Transnistria and includes Odessa without launching some form of mobilization. And it is increasingly unlikely that they will be able to establish control over both oblasts and the buffer zone they desire in the coming weeks," she said.
A man walks past fragments of missiles in front of the shopping and entertainment center in the Ukrainian Black Sea city of Odessa, May 10, 2022.
Oleksandr Gimanov/AFP via Getty Images
Sanctions from the West are having a "pretty significant" impact on Russia, according to Haines.
"Among the indicators that one might look at are, for example, the fact that we're seeing close to about, we predict, approximately 20% inflation in Russia; that we expect that their GDP will fall about 10%, possibly even more over the course of the year," she said.
The fighting itself has also worn on Russia's capabilities.
"The ground combat forces have been degraded considerably. It's going to take them years ... to rebuild that," she said.
But that could drive Putin to other means of exerting force. Haines said, "They may rely more on things like cyber, nuclear, precision, etc. … Putin would probably only authorize the use of nuclear weapons if he perceived an existential threat to the Russian state or regime."
Emergency crew stands around near burning debris, after a school building was hit as a result of shelling, in the village of Bilohorivka, Luhansk, Ukraine, May 7, 2022.
State Emergency Services via Reuters
Haines warned, "The current trend increases the likelihood that President Putin will turn to more drastic means, including imposing martial law, reorienting industrial production, or potentially escalatory military actions to free up the resources needed to achieve his objectives as the conflict drags on, or if he perceives Russia is losing in Ukraine."
"The most likely flashpoints for escalation in the coming weeks are around increasing Russian attempts to interdict Western security assistance, retaliation for Western economic sanctions or threats to the regime at home. We believe that Moscow continues to use nuclear rhetoric to deter the United States and the West from increasing lethal aid to Ukraine and to respond to public comments that the U.S. and NATO allies that suggest expanded Western goals in the conflict," she said. "If Putin perceives that the United States is ignoring his threats, he may try to signal to Washington the heightened danger of its support to Ukraine by authorizing another large nuclear exercise involving a major dispersal of mobile intercontinental missiles, heavy bombers, strategic submarines."
-ABC News' Matt Seyler
May 10, 2022, 11:29 AM EDT
Russia has lost 8 to 10 generals so far, US believes
The U.S. believes eight to 10 Russian generals have been killed in Ukraine since the beginning of the invasion, Defense Intelligence Agency Director Lt. Gen. Scott Berrier told senators on Tuesday at an Armed Services Committee hearing.
