BRUSSELS, April 7 (Xinhua) -- The European Union (EU) on Tuesday called for maximum restraint and full respect for international law amid escalating tensions between the United States and Iran, stressing its rejection of any threats against critical civilian infrastructure.

"We have always said that diplomacy is the answer," Anitta Hipper, the European Commission's lead spokesperson for foreign affairs and security policy, said at a press briefing.

Hipper reiterated that the EU rejects "any threats to attacks regarding critical civilian infrastructure," warning that such actions could have devastating humanitarian consequences across the region and beyond, and could further escalate tensions.

"The EU calls for maximum restraint, the protection of civilians and civilian infrastructure, and full respect of international law and international humanitarian law by all parties," she said.

The remarks came as concerns mounted over a sharp deterioration in the Middle East situation. U.S. President Donald Trump said on Monday that Iran could be "taken out" in one night, adding that night "might" be Tuesday evening - the deadline he set for Iran to reach a deal and reopen the Strait of Hormuz. ■