KYIV, Ukraine (AP) 鈥 U.S. arms deliveries to Ukraine resumed Wednesday, officials said, a day after the Trump administration lifted its suspension of military aid for Kyiv in its fight against Russia's invasion, and Ukrainian officials signaled that they were open to a 30-day ceasefire backed by Washington.

Kremlin spokesperson Dmitry Peskov said Wednesday that it鈥檚 important not to 鈥済et ahead鈥 of the question of responding to the ceasefire proposal. He told reporters that Moscow is awaiting 鈥渄etailed information鈥 about it from the U.S. and suggested that Russia must get that first before it can take a position.

Arms deliveries to Ukraine have already resumed through a Polish logistics center, the foreign ministers of Ukraine and Poland announced Wednesday. The deliveries go through a NATO and U.S. hub in the eastern Polish city of Rzeszow that鈥檚 has been used to ferry Western weapons into neighboring Ukraine about 70 kilometers (45 miles) away.

The American military help is vital for Ukraine鈥檚 shorthanded and weary army, which is keeping Russia鈥檚 bigger military force at bay. But for Moscow, more American aid spells potentially more difficulty in achieving its war aims and likely will be a tough sell in Moscow for Washington鈥檚 peace efforts.

U.S. Secretary of State Marco Rubio said Wednesday that Washington will pursue 鈥渕ultiple points of contacts鈥 with Russia to see if President Vladimir Putin is ready to negotiate an end to the war. He declined to give details.

鈥淭he ball is truly in their court,鈥 Rubio said at a refueling stopover in Shannon, Ireland on his way to talks in Canada with other Group of Seven leading industrialized nations.

Rubio said he hoped to see Russia stop attacks on Ukraine within the next few days as a first step.

鈥淲e don鈥檛 think it鈥檚 constructive to stand here today and say what we鈥檙e going to do if Russia says no,鈥 Rubio said, adding he wanted to avoid statements about Russia that 鈥渁re abrasive in any way.鈥

Escalation of conflict amid ceasefire talks

His comments came amid intensifying Russian effort to push Ukrainian forces out of its that has yielded breakthroughs in recent days, Ukrainian soldiers told The Associated Press. The fighting has escalated as ceasefire talks come to a head, with Moscow intent on taking back its territory and Kyiv determined to hold onto it as a bargaining chip in any negotiations.

Ukrainian forces made a daring raid into the Russian region last August in the first foreign occupation of Russian territory since World War II. They have held on despite from tens of thousands of Russian and .

Recent fighting reportedly has focused on the Kursk town of Sudzha, which is a key Ukrainian supply hub and operational base. Ukrainian soldiers said the situation is dynamic and fighting continues in and around the town, but three of them conceded Russian forces were making headway.

Russian state news agencies RIA Novosti and Tass reported Wednesday that the Russian military have entered Sudzha. It wasn't possible to independently verify either side's claims.

Inside Ukraine, Russian ballistic missiles killed at least five civilians, officials said Wednesday,

U.S. President Donald Trump wants to end the three-year war and pressured Zelenskyy to enter talks. The suspension of U.S. assistance came days after in a tense White House meeting.

Rubio, who led the American delegation to Tuesday's talks in Saudi Arabia, said Washington would present the ceasefire offer to the Kremlin, which has so far opposed anything short of a permanent end to the conflict and hasn't accepted any concessions.

鈥淲e鈥檙e going to tell (the Russians) this is what鈥檚 on the table. Ukraine is ready to stop shooting and start talking. And now it鈥檒l be up to them to say yes or no,鈥 Rubio told reporters after the talks. 鈥淚f they say no, then we鈥檒l unfortunately know what the impediment is to peace here.鈥

Trump鈥檚 special envoy, Steve Witkoff, is expected to travel this week to Moscow, where he could meet with Putin, according to a person familiar with the matter but not authorized to comment publicly. The person cautioned that scheduling could change.

Russian officials are wary about the U.S.-Ukraine talks

Russian lawmakers signaled wariness about the prospect of a ceasefire.

鈥淩ussia is advancing (on the battlefield), so it will be different with Russia,鈥 senior Russian senator Konstantin Kosachev noted in a post on the messaging app Telegram.

鈥淎ny agreements (with the understanding of the need for compromise) should be on our terms, not American,鈥 Kosachev wrote.

Lawmaker Mikhail Sheremet told the state news agency Tass that 鈥淩ussia is not interested in continuing鈥 the war but at the same time Moscow 鈥渨ill not tolerate being strung along.鈥

The outcome of the Saudi Arabia talks 鈥減laces the onus on Washington to persuade Moscow to accept and implement the ceasefire,鈥 said John Hardie, a defense analyst and deputy director of the Russia Program at the Foundation for Defense of Democracies, a Washington-based research institute.

鈥淢oscow will present itself as cooperative, but may push for agreement on basic principles for a final peace deal before agreeing to a ceasefire,鈥 he said.

鈥淩ussia may also insist on barring Western military aid to Ukraine during the ceasefire and on Ukraine holding elections ahead of a long-term peace agreement.鈥

Russia鈥檚 foreign intelligence service, known as the SVR, reported Wednesday morning that the service鈥檚 chief, Sergei Naryshkin, spoke on the phone with CIA Director John Ratcliffe on Tuesday.

The two discussed cooperation 鈥渋n areas of common interest and the resolution of crisis situations,鈥 according to a statement by the SVR.

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Stefanie Dazio in Berlin, and Sylvie Corbet in Paris, contributed to this report.

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