Donald Trump was shaking hands at a picnic with lawmakers after pushing for more diplomacy with Iran. Israel ignored his pleas.

World leaders had gathered Monday in Canada with the specific goal of helping to defuse a series of global pressure points, only to be disrupted by a showdown over Iran’s nuclear program that could escalate in dangerous and uncontrollable ways.

Iranian officials have warned that U.S. participation in an attack on its facilities will imperil any chance of the nuclear disarmament deal the president insists he is still interested in pursuing.

Donald Trump's former national security adviser said Israel's attacks could make a nuclear deal more likely. Trump said on Truth Social that Iranians should evacuate their capital city of Tehran. To completely destroy Iran's nuclear facilities, Israel will likely need U.S. bomber planes.

Leaders of some of the world’s biggest economic powers arrive in the Canadian Rockies for a Group of Seven summit that's been shadowed by an escalating conflict between Israel and Iran and U.S. President Donald Trump’s unresolved trade war.

After canceling negotiations with the U.S. scheduled for Sunday, Tehran has signaled it is willing to talk.

Tehran has asked Qatar, Saudi Arabia and Oman to press U.S. President Donald Trump to use his influence on Israel to agree to an immediate ceasefire with Iran in return for Tehran's flexibility in nuclear negotiations,