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.

US President Donald Trump rejected a plan by Israel to kill Iran's Supreme Leader Ayatollah Ali Khamenei, three US officials have told BBC's US partner CBS News. Trump reportedly told Israeli Prime Minister Benjamin Netanyahu that assassinating Khamenei was not a good idea,

Israel’s attack on Iran was long in the making – the result of years of meticulous planning by Israel and days of high-stakes talks between Tel Aviv and Washington, officials told CNN.

Israel's bombing of Iranian targets ignites political clash as Democrats, Republicans, and media figures debate Netanyahu's actions and Trump's Middle East influence

President Trump is trapped between the “America First” isolationists and others in his party who are cheering on Israel’s strikes against Iran.

In response to Israel’s attack, Iran fired back with more than 100 drones. NBC News’ Chief International Correspondent Keir Simmons reports more. Former NATO Supreme Allied Commander retired Gen. Wesley Clark and Senior Fellow at the Carnegie Endowment for International Peace Aaron David Miller join Ana Cabrera to examine the possibility of further attacks.

“They should now come to the table to make a deal before it’s too late. It will be too late for them. You know the people I was dealing with are dead, the hardliners,” he added. The strikes killed the head of Iran's Revolutionary Guard Corps, and the country's top two military officials, in addition to several nuclear scientists.