U.S. President Donald Trump sent a letter to Iran's Supreme Leader Ali Khamenei, seeking a new deal with Tehran to restrain its rapidly advancing nuclear program and replace the agreement he withdrew America from in his first term in office.

Iranian state media immediately picked up on Trump's acknowledgment, given in portions of a Fox Business News interview aired on Friday, though there was no confirmation from Khamenei's office that any letter had been received. The interview is expected to air in full on Sunday.

EU chiefs on Friday briefed several NATO partners -- including Britain and Turkey -- about the outcome of a meeting on defense of the bloc's leaders in Brussels a day earlier.

"Our cooperation with likeminded NATO partners is vital for international security. For Ukraine. For stepping up our joint efforts on defense," Antonio Costa, who heads the body representing the European Union's 27 states, said in a post on X.

Chinese Foreign Minister Wang Yi said China will continue to retaliate for the United States' "arbitrary tariffs" and accused Washington of "meeting good with evil" in a press conference Friday on the sidelines of the country's annual parliamentary session.

Wang said China's efforts to help the U.S. contain its fentanyl crisis have been met with punitive tariffs, which are straining their ties.

The discovery of a huge unexploded World War II-era bomb near the tracks severed Paris' high-speed rail links with London and Brussels on Friday, dashing travelers' weekend getaway plans and causing cascading disruptions to scores of other intercity and commuter trains in and out of the French capital's Gare du Nord, the busiest railway station in France.

Eurostar, operator of sleek high-speed trains between the U.K. and the continent, announced the cancellation of all its services to and from Gare du Nord, its Paris hub, and the British and Belgian capitals.

Turkish security forces have killed 26 Kurdish militants in the past week, the Turkish defense ministry said Thursday, even as the militants' imprisoned leader called on his group to disband and his fighters declared a ceasefire.

A defense ministry statement said the militants were killed in military operations in areas including the north of Iraq and Syria. It did not provide details on the circumstances of the clashes.

Russia targeted Ukraine's energy infrastructure in a large-scale missile and drone bombardment during the night, officials said Friday, hours after Ukrainian President Volodymyr Zelensky said talks with the U.S. on ending the 3-year war will take place next week.

Ukraine came under a "massive missile and drone" attack, Energy Minister Herman Halushchenko wrote on Facebook. At least 10 people, including a child, were injured, authorities said.

France is providing military intelligence to Ukraine after Washington announced it was freezing the sharing of information with Kyiv.

French Defense Minister Sebastien Lecornu said, “Our intelligence is sovereign. We have intelligence that we allow Ukraine to benefit from.”

The Kremlin on Thursday dismissed as “extremely confrontational” a speech by Emmanuel Macron, in which the French president called Moscow a “threat” to Europe.

In an address to the nation on Wednesday, Macron also said that he’s ready to start discussions on nuclear deterrence with European allies.

EU Commission President Ursula von der Leyen says “Europe faces a clear and present danger, and therefore Europe has to be able to protect itself, to defend itself.”

Arriving at the EU summit alongside Zelenskyy, von der Leyen said: “This is a watershed moment for Europe and Ukraine as part of our European family. It’s also a watershed moment for Ukraine.”

European Union leaders are holding emergency talks on Thursday on ways to quickly increase their military budgets after the Trump administration signaled that Europe must take care of its own security and also suspended assistance to Ukraine.

In just over a month, President Donald Trump has overturned old certainties about U.S. reliability as a security partner, as he embraces Russia and withdraws American support for Ukraine.