Ukraine destroys Russian arsenal, Poltava attack kills dozens, Russia nears rail hub. Washington considers authorizing long-range strikes.

Russia said it was working to repel a Ukrainian drone attack on Toropets, where there's a major military depot, as explosions lit up the night.

Massive explosions and fires are occurring in Russia after several Ukrainian UAVs struck an ammunition depot in Toropets in Tver, Russia located 470km from Ukraine, VIDEO:

The ammunition warehouse of the russian army in the area of ​​the town of Toropets, Tver Oblast, which was destroyed by drones of the Armed Forces of Ukraine

Ukrainian drones hit an ammunition depot inside Russia this week, the latest attack targeting military facilities deep within the country.

Overnight, Ukrainian drones attacked one of the largest arsenals in Russia, causing a powerful detonation in the town of Toropets in Russia's Tver Oblast, a source in the Security Service of Ukraine (SBU) told the Kyiv Independent.

Ukraine's air force said on Thursday it had shot down all 42 drones and one of four missiles used by Russia during overnight attacks. Air defences went into operation in nine Ukrainian regions, the air force said in a statement on the Telegram messaging app nearly 31 months after Russia's full-scale invasion.

An apparent Ukrainian attack on Russian military infrastructure — one of more than 10 since the beginning of August — struck overnight Tuesday. A munitions depot in the town of Toropets, deep inside Russia,

"The enemy hit an ammunition depot in the area of Toropets," said Yuri Podolyaka, a Ukrainian-born, pro-Russian military blogger.