President Joe Biden was meeting Tuesday with the top four leaders of Congress to press them to act quickly to avoid a looming government shutdown early next month and to pass emergency aid for Ukraine and Israel.

Biden was hosting House Speaker Mike Johnson, R-La., Senate Majority Leader Chuck Schumer, D-N.Y., House Minority Leader Hakeem Jeffries, D-N.Y., and Senate Minority Leader Mitch McConnell, R-Ky. Vice President Kamala Harris also was attending.

While Joe Biden and Donald Trump are marching toward their respective presidential nominations, Michigan's primary on Tuesday could reveal significant political perils for both of them.

Trump, despite his undoubted dominance of the Republican contests this year, is facing a bloc of stubbornly persistent GOP voters who favor his lone remaining rival, former U.N. Ambassador Nikki Haley, and who are skeptical at best about the former president's prospects in a rematch against Biden.

Ukrainian President Volodymyr Zelensky said on Tuesday he had arrived in Saudi Arabia for talks, including about prisoners of war, following previous Saudi mediation in POW swaps with Russia.

"The kingdom's leadership has already contributed to the release of our people. I am confident this meeting will also yield results," Zelensky said on X, formerly Twitter.

Thousands of farmers marched in Poland's capital on Tuesday to protest European Union agricultural policies and imports of cheap food from neighboring Ukraine, part of weeks of similar protests across Europe.

Protesters say they want the Polish government to withdraw from the EU's Green Deal, a plan meant to fight climate change and help the environment with measures that they say are too costly.

The European Union's legislature on Tuesday approved a watered-down plan to better protect nature and fight climate change in the 27-nation bloc, despite opposition from the biggest party in parliament and fierce protests from the farming community.

The plan is a key part of the EU's vaunted European Green Deal that seeks to establish the world's most ambitious climate and biodiversity targets and make the bloc the global point of reference on all climate issues.

Treasury Secretary Janet Yellen on Tuesday offered her strongest public support yet for the idea of liquidating roughly $300 billion in frozen Russian Central Bank assets and using them for Ukraine's long-term reconstruction.

"It is necessary and urgent for our coalition to find a way to unlock the value of these immobilized assets to support Ukraine's continued resistance and long-term reconstruction," Yellen said in remarks in Sao Paulo, Brazil, where Group of 20 finance ministers and central bank governors are meeting this week.

U.S. President Joe Biden signaled that a cease-fire in Gaza could be at hand, saying that Israel has agreed to pause its offensive during the upcoming Muslim holy month of Ramadan if a deal is reached to release some hostages held by Hamas.

But both Israel and Hamas downplayed on Tuesday the idea that a breakthrough was imminent.

NATO Secretary-General Jens Stoltenberg told The Associated Press that the military alliance has no plans to send combat troops into Ukraine amid reports that some Western countries may be considering putting boots on the ground in the war-ravaged country.

Stoltenberg said that "NATO allies are providing unprecedented support to Ukraine. We have done that since 2014 and stepped up after the full-scale invasion. But there are no plans for NATO combat troops on the ground in Ukraine."

The Palestinian Authority's prime minister announced his government's resignation on Monday, seen as the first step in a reform process urged by the United States as part of its latest ambitious plans to resolve the Israeli-Palestinian conflict.

But it will do little to address the authority's longstanding lack of legitimacy among its own people or its strained relations with Israel. Both pose major obstacles to U.S. plans calling for the PA, which administers parts of the Israeli-occupied West Bank, to govern postwar Gaza ahead of eventual statehood.

Hezbollah's deputy leader Sheikh Naim Qassem has warned that the group has much more weapons to use if Israel expands the war.

"If the Israelis go too far, we will retaliate more. All what we have used until now in the fighting is the minimum of what we own," he said in a speech Monday in an apparent reference to Hezbollah's huge arsenal including precision-guided missiles and explosive drones.