Russia takes economic aim at countries aiding Ukraine, where it continues shelling the east

This photograph taken on April 26, 2022, shows the Soviet monument to Ukraine-Russia friendship being dismantled in Kyiv. - Authorities in Kyiv on April 26, 2022, began demolishing a monument symbolising historic ties between ex-Soviet Ukraine and Russia, AFP correspondents reported, more than two months after Moscow's troops invaded Ukraine. (Genya Savilov/AFP via Getty Images/TNS)

A general view shows the Zaporizhzhia nuclear power plant, situated in the Russian-controlled area of Enerhodar, seen from Nikopol in April 27, 2022. (Ed Jones/AFP via Getty Images/TNS)

A young woman attending a demonstration in support of Mariupol cries as she listens to Ukrainian national anthem, on April 27, 2022, in Kyiv, Ukraine. (Alexey Furman/Getty Images/TNS)

KHARKIV, Ukraine — Moscow on Wednesday turned off the natural-gas spigot to the front-line Eastern European states of Poland and Bulgaria, signaling its willingness to take sharp economic aim at those who aid Ukraine.