The U.S. strike on Iran has fueled fears that Israel’s war with Tehran could escalate to a wider regional conflict and other countries began reacting with calls for diplomacy and words of caution.

Leaders around the world expressed concern and support for the U.S. strikes on nuclear facilities in Iran on June 21.

Israel ratcheted up attacks on Iran even as Tehran vowed to retaliate against US strikes on its nuclear facilities over the weekend, fueling fears of a wider war in the Middle East and rattling global markets.

By Parisa Hafezi, Phil Stewart and Maayan Lubell ISTANBUL/WASHINGTON/JERUSALEM (Reuters) -Iran and Israel traded air and missile strikes as the world braced on Monday for Tehran's response to the U.S.