An Iranian official on Wednesday said the funeral procession for late supreme leader Ayatollah Ali Khamenei, who was killed by U.S.-Israeli strikes in February, will pass through Iraq before his burial in Iran.

U.S. President Donald Trump said Wednesday he expected the accord with Iran ending the Middle East war to be signed "shortly" but cast uncertainty over the exact date.

Tehran's foreign ministry on Wednesday said it was considering a plan for the presidents of the U.S. and Iran to sign the deal ending the Middle East war, ahead of the expected ceremony in Switzerland.

U.S. President Donald Trump on Wednesday warned Iran he was ready to resume military action if Tehran did not abide by its obligations, two days ahead of the signing of an accord to end the war between the foes.

"If they (the Iranian side) don't behave, we'll go right back to dropping bombs right smack in the middle of their head," Trump said at the G7 summit alongside Egyptian President Abdel Fattah al-Sisi.

Moscow supports a deal between the United States and Iran to end the Middle East war, Russian Foreign Minister Sergei Lavrov told his Iranian counterpart during a phone call on Wednesday, insisting that Israel must also comply.

"The Russian minister expressed support for the understandings reached through effective mediation by Pakistan and Qatar to de-escalate tensions in the region. The importance of compliance by all parties involved in the armed conflict, including Israel, was emphasized," the Russian foreign ministry said in a read-out of the call.

Israeli Prime Minister Benjamin Netanyahu told President Donald Trump last year that he was the "greatest friend Israel ever had in the White House."

Now, as Trump tries to finalize a deal to end the war with Iran, he's unloading on Netanyahu with rhetoric that no other American leader has dared to use publicly.

Leaders at the Group of Seven summit on Wednesday threw their support behind U.S. President Donald Trump's tentative agreement with Iran to open the Strait of Hormuz and further extend a shaky ceasefire — even though he's offered scant specificity about how that would be implemented.

In a declaration issued overnight, the leaders called the deal a "historic opportunity to prevent Iran from acquiring any nuclear weapon and tackling the threats related to its regional and ballistic activities." The leaders said that they were "ready to contribute to its implementation," although neither the White House nor Iran has released the text of the agreement.

Iran's Foreign Minister Abbas Araghchi said on Tuesday that ending the war on all fronts, including Lebanon, was "the most important" issue in the peace deal with the United States announced the day before.

Iran's top negotiator Mohammad Bagher Ghalibaf will attend the signing in Switzerland of the deal ending the war with the United States, an Iranian deputy foreign minister said on Tuesday.

Israeli Prime Minister Benjamin Netanyahu on Monday said he intended to run in elections scheduled for later this year, as he faced domestic criticism over his wartime leadership.