Iran's Foreign Minister and chief nuclear negotiator Abbas Araghchi said Israel's strikes against his country "deal a blow" to diplomacy during a call Monday with his French, British, and German counterparts.

"The Israeli aggression against Iran in the midst of nuclear negotiations with the United States is a blow to diplomacy," Abbas Araghchi said during a call reported by his ministry with French Foreign Minister Jean-Noel Barrot, the United Kingdom's David Lammy, Germany's Johann Wadephul, and the European Union's head of foreign affairs Kaja Kallas.

U.S. President Donald Trump left a G7 summit in Canada a day early on Monday, heading back to the White House as Israel and Iran traded missile fire for a fifth straight day.

Trump's helicopter lifted off from the summit venue in the Canadian Rockies to take him to his plane, shortly after he warned residents to evacuate the Iranian capital Tehran.

A Russian attack on Ukraine's capital killed at least 14 people, the head of Kyiv's military administration said Tuesday.

"According to initial reports, there are already 14 deaths in Kyiv," Tymur Tkachenko wrote on Telegram, adding that rescuers were still searching the rubble for victims.

TIsrael's strikes on the headquarters of Iran's state television in Tehran killed three people, the broadcaster said on Tuesday, a day after the attack.

"Three of the TV station's employees were killed and others were wounded in the Israeli attack" on Monday, the channel announced, without specifying the number of people hospitalized.

The White House is discussing with Iran the possibility of a meeting this week between U.S. envoy Steve Witkoff and Iranian Foreign Minister Abbas Araghchi, four sources briefed on the issue told U.S. news portal Axios.

Iran said it destroyed strategic targets in Israel overnight using drones, as intense strikes between the arch-foes raged for a fifth day on Tuesday.

"Various types of destructive drones, equipped with precise destruction and targeting capabilities, destroyed strategic positions of the Zionist regime in Tel Aviv and Haifa," General Kioumars Heidari, commander of the army's ground forces, was quoted as saying by state television.

Israel appeared to be expanding its air campaign on Tehran five days after its surprise attack on Iran's military and nuclear program, as U.S. President Donald Trump posted an ominous message warning residents of the city to evacuate.

“IRAN CAN NOT HAVE A NUCLEAR WEAPON,” Trump wrote Monday night before returning to Washington early from a Group of Seven summit in Canada. “Everyone should immediately evacuate Tehran!” he added.

China on Tuesday accused President Donald Trump of "pouring oil" on the mounting conflict between Iran and Israel, after the U.S. leader warned Tehran residents to "immediately evacuate".

"Fanning the flames, pouring oil, making threats and mounting pressure will not help to promote the de-escalation of the situation, but will only intensify and widen the conflict," foreign ministry spokesman Guo Jiakun said when asked about Trump's remarks at a regular news conference.

Volodymyr Zelensky on Monday said that he will discuss buying U.S. weapons with Donald Trump at the G7 summit, but added that U.S. military aid was not on the agenda.

"We are not talking to America today about new assistance. Indeed, one of the issues I will discuss with President Trump at the meeting is the defense package that Ukraine is ready to buy," Zelensky said during a visit to Vienna, from where he is set to travel to Canada for this week's G7 summit.

Russia said Monday that the United States had cancelled a fresh round of talks on normalizing the operations of their embassies.

"The next meeting... has been cancelled at the initiative of the American negotiators. We hope that the pause they have taken will not be too long," Russian foreign ministry spokeswoman Maria Zakharova said.