What are Abrams tanks and why is the US sending them to Ukraine?

Ukraine Tanks: US to Send 31 Abrams, Adding to German Leopard Armor - Bloomberg

All 31 Abrams Tanks in Ukraine, US Military Confirms to VOA

Ukraine to receive first Abrams tanks in September – Politico - Ukrainian World Congress

U.S. sends M1 Abrams battle tanks to Ukraine: What to know - The Washington Post

U.S. and Germany set to send tanks to Ukraine, breaking deadlock - The Japan Times

U.S. to Provide 31 Abrams Tanks to Ukraine Amid Russian Warnings - The Moscow Times

Ukraine Now Has World-Class Abrams Tanks, But Will It Be Enough?

US. Will Send Abrams Tanks to Ukraine Ahead of Expected Russian Offensive

Ukraine Needs America's M1 Abrams Tanks

U.S. expects to begin delivering Abrams tanks to Ukraine in September - POLITICO

Pentagon looks to shift dynamic in Ukraine war, without Abrams tanks – Euractiv

Russia-Ukraine war: Ukraine is getting Abrams tanks, but not what it really wants

Germany agrees to provide Ukraine with Leopard 2 battle tanks, US to send Abrams tanks - ABC News

Ukrainian troops to begin training on US-made tanks in next few weeks – POLITICO

US said 'leaning toward' supplying Ukraine with Abrams tanks