Iran’s conventional navy warships might be largely destroyed, but analysts say that’s never where its true sea power lay.

The United Arab Emirates’ Ministry of Defense announced that the country’s air defenses are “actively engaging” with a missile and drone attack as the Iran war’s shaky ceasefire was again challenged.

Iran is able to withstand the effects of the US blockade for three to four more months and retains significant missile stockpiles, according to US intelligence, casting doubt on Donald Trump’s claim that Tehran needs the war to end imminently.

The U.S. conducted strikes against at least two locations in Iran Thursday, a U.S. official said.

The president warned “we’ll knock them out a lot harder, and a lot more violently” if Iran doesn’t sign a deal soon. Follow for live updates.

Iran accuses the US of violating the truce, alleging it targeted an oil tanker and carried out attacks on coastal areas.

Mediators are pushing a short-term memo to guide a month of negotiations

The United States said it had attacked Iranian military targets in response to strikes on American ships. Washington and Tehran are debating a peace proposal, Iranian officials said.

Iran has said it is reviewing new U.S. proposals to end the war, as U.S. President Donald Trump threatens more bombing if no deal is reached.