Iran live updates: US launches 2nd round of strikes on Iran on Wednesday

After giving Iran until next week to come back to the negotiating table or face bombing of its critical infrastructure, President Donald Trump said on Wednesday that he didn't like giving deadlines.

"I don't like giving deadlines, but they pretty much know. They know the story. They better behave," Trump told reporters.

Trump had been asked if he planned to give Iran a specific deadline before he started bombing bridges.

Iran is "focused on defense" even as negotiations with the U.S. continue, Iranian Foreign Ministry spokesperson Esmail Baghaei said in a statement Wednesday.

"Our armed forces have shown that any aggression against Iranian territory will definitely be met with a reciprocal response," Baghaei said.

"Commitment for commitment means that we consider our commitments to be enforceable as long as the other party adheres to them; in the event of a breach by the other party, we have also reciprocally refrained from implementing our commitments wherever necessary," he said.

U.S. Central Command said it redirected two commercial vessels attempting to run the blockade.

"Since restarting the naval blockade against Iranian ports 17 hours ago, U.S. forces have redirected 2 commercial vessels attempting to run the blockade. The U.S. military remains vigilant and prepared to ensure full compliance," CENTCOM said in a statement Wednesday.

Talks held in Rome between representatives of Israel and Lebanon have ended on Wednesday following “two days of productive and positive discussions,” a State Department official said.

“We agreed on the structure and guidelines for the pilot zone process, to be finalized and implemented in the coming days,” the official said.

The official said the parties will now move on to expand technical talks, which will focus on implementing all areas of the framework agreed upon last month and ultimately reaching a comprehensive deal between Israel and Lebanon.

-ABC News' Shannon K. Kingston