Trump "could go" to Istanbul on Friday for negotiations between Russia and Ukraine.

"If something happens, I would go on Friday if it's appropriate," the president said in Doha, who has said he would like to meet with Russian President Vladimir Putin there, although the latter has not confirmed his attendance, while Ukrainian leader Volodymyr Zelensky is in the Turkish city.

"We have people negotiating, and I hope Russia and Ukraine can do something because this has to stop, not just because of the money. We have heads, arms, and legs scattered all over the ground ," Trump said at an event promoting bilateral business with Qatar in Doha.

During his trip to the Middle East, which began Tuesday in Saudi Arabia, Trump has been sending messages that he would be willing to take advantage of the trip, which officially ends tomorrow in the United Arab Emirates, to meet with Putin in a third country, Efe reports.

Secretary of State Marco Rubio , who is accompanying Trump in his presidential entourage at the start of this tour, arrived in Turkey today to participate in a NATO ministerial meeting and is scheduled to mediate negotiations between the Ukrainian and Russian delegations tomorrow with Steve Witkoff, the U.S. president's special envoy .

Russian President Vladimir Putin has rejected his Ukrainian counterpart Volodymyr Zelensky's proposal to hold a face-to-face meeting in Istanbul and has sent a negotiating delegation led by Vladimir Medinsky, one of his advisers .

The Russian delegation , which according to the Russian news agency Interfax is already in Istanbul, includes, among others, a deputy foreign minister, a deputy defense minister, and a senior official from the Russian Army General Staff, which contrasts with the high-level delegation sent by Kiev.

German Foreign Minister Johann Wadephul said today that Putin is about to "push the needle" too far by not going to Istanbul to negotiate a possible ceasefire directly with Zelensky.

"I can only say in this situation that Russian President Putin must realize that he is about to push the limits too far. The world is waiting for him to finally heed the call to come to the negotiating table with a delegation that will meet the needs of the current situation," Wadephul said upon arriving at the NATO meeting.

Zelensky is in Turkey today and is willing to negotiate, but right now "the only chair left empty is the Russian chair, and that shows that right now we have to realize that Russia wants to continue the war, Russia doesn't want serious negotiations right now, and that will have consequences," said the German Foreign Minister in Antalya.

Wadhephul, who has met with Rubio, asserts that there is "a strong determination" in Europe to decide on additional sanctions if Russia "doesn't move toward peace" and believes that Washington "is also thinking about it."

"There's a strong movement, as you know, in the U.S. Senate, where many senators have declared their willingness to pass sanctions legislation, and the U.S. administration assumes this will happen if Russia doesn't budge. So the U.S. and Europe are on the same page" on this issue, he says.

"It's never too late to sit down at the negotiating table. The urgent call today is for Russia to reconsider the situation (...)" and "come to negotiations now."

Iran is willing to accept a nuclear deal

Iran is also willing to reach a nuclear deal with the United States in exchange for the lifting of economic sanctions against the Tehran regime, Ali Shamkhani, political, military and nuclear advisor to Iran's Supreme Leader Ayatollah Ali Khamenei, told NBC.

The country would be willing to refrain from producing nuclear weapons and from disposing of its highly enriched uranium stockpiles, which could be used for military purposes if a deal is reached, and would only enrich uranium to the minimum levels necessary for civilian use and allow international inspectors to oversee the process.

The senior official's remarks come hours after Trump asked Qatar for help in nuclear negotiations with Iran toward a nuclear deal, albeit with the threat that the "unfriendly option is a violent path, which I don't want."

"Negotiating a deal with Iran is, by far, the friendliest path. There are only two paths: friendly and unfriendly, and unfriendly is a violent path," Trump warned during a state dinner at Doha's Lusail Palace, hosted by Qatari Emir Tamim bin Hamad Al Thani in honor of the US president.

Iran has denounced the contradictory positions of US officials on its nuclear program as "hindering" nuclear negotiations between the two sides.

Iran and the United States began nuclear talks on April 12, after US President Donald Trump called on Tehran to negotiate an agreement and threatened a military strike if it failed to reach an agreement on its nuclear program.