The FSB said the "saboteurs" were carrying German submachine guns and explosive devices.
Ukraine says that the Russian army has lost over 102,000 military personnel since February.
The 13-year-old boy from New Rochelle, New York, said he always reads The New York Times with his teacher and became vocal about current events.
Former Russian President Dmitry Medvedev warned that the world would continue to be on the verge of a Third World War if Russia did not get the security guarantees it wants.
An adviser to Ukrainian President Volodymyr Zelensky told Russian President Vladimir Putin that he "needs to come back to reality" before pursuing negotiations.
The return of basic military training in Russian schools is seen as a move to address the disappointing combat performance of Russian soldiers in Ukraine.
US Congress passed one bill and an addendum Thursday that would grant the Justice Department additional tools to prosecute war criminals.
Fox News host Tucker Carlson lashed out at Ukraine president Volodymyr Zelenskyy on his primetime show.
A Russian official accused Russian President Vladimir Putin of violating a law against spreading fake information about their country's military.
The Ukrainian intelligence source said Russia plans to mobilize Iskanders and bomber jets to attack Ukraine before Christmas.
President Vladimir Putin has acknowledged Russia's shortcomings in its war with Ukraine including its army's lack of basic resources.
President Joe Biden said Russian President Vladimir Putin failed in his objective to invade Ukraine as the war stretches into its 10th month.
The Ukrainian soldier also revealed that executions were common among the Russian army's ranks.
The new Zircon hypersonic cruise missile could cover about 1,000 kilometers (625 miles).
The recruit was part of a unit that was sent to attack a gas station in Bakhmut.
For the first time since the Russian invasion, the U.S. would supply Ukraine with a Patriot air defense system and precision-guided munitions.
The founder of the Wagner mercenary group added that women could also serve as nurses and communications officers in the war in Ukraine.
Ukrainian President Volodymyr Zelenskiy will be greeted with pomp and applause when he enters the U.S.
Ukraine President Volodymyr Zelensky on Wednesday confirmed his trip to the U.S. to meet with President Joe Biden and the U.S. Congress.
Russia has lost more soldiers to friendly fire than the international conventional norm, according to a report.
The Russian hubs were located in several settlements in the temporarily occupied Zaporizhzhia region.
The Russian soldier had initially attempted to surrender his weapons to their command but fled the war after the leadership refused to let him go.