U.S. urges more arms for Ukraine; fear expanding war

— The U.S. pressed its allies Tuesday to move "heaven and earth" to keep Kyiv well-supplied with weapons as Russian forces rained fire on eastern and southern Ukraine amid growing new fears the war could spill over the country's borders.

For the second day in a row, explosions rocked the separatist region of Trans-dniester in neighboring Moldova, knocking out two powerful radio antennas close to the Ukrainian border. No one claimed responsibility for the attacks, but Ukraine all but blamed Russia.

In other developments, Poland and Bulgaria said the Kremlin is cutting off natural gas supplies to the two NATO

countries starting Wednesday, the first such actions of the war. Both nations had refused Russia's demands that they pay in rubles.

Poland has been a major gateway for the delivery of weapons to Ukraine and confirmed this week that it is sending the country tanks.

The potential effect of the cutoff was not immediately clear. Poland said it was wellprepared for such a move after working for years to reduce its reliance on Russian energy.

Bulgaria gets over 90% of its gas from Russia, and officials said they were working to find other sources.

Two months into the fighting, Western arms have helped Ukraine stall Russia's invasion, but the country's leaders have

said they need more support fast.

U.S. Defense Secretary Lloyd Austin convened a meeting Tuesday of officials from about 40 countries at the U.S. air base at Ramstein, Germany, and said more help is on the way.

After unexpectedly fierce resistance by Ukrainian forces thwarted Russia's attempt to take Ukraine's capital, Moscow

now says its focus is the capture of the Donbas.