Moscow, June 15 -- Russian President Vladimir Putin and his U.S. counterpart Donald Trump had discussed the situation in the Middle East in a phone conversation, the Kremlin said.

"The conversation lasted for 50 minutes, it was substantive, sincere and very useful," Russian presidential aide Yuri Ushakov said on Saturday.

"Naturally, it was focused on the dangerous exacerbation of the situation in the Middle East."

Putin denounced the Israeli military operation against Iran and expressed grave concern over the possible escalation of the conflict, which would have unpredictable consequences for the entire Middle East region, he said in a statement.

"Putin emphasized the importance of preventing the conflict from escalating and the r...