The 5 deadliest Western-provided weapons Ukraine is using to fight Russia

• The West has been sending Ukraine weapons and armed vehicles since the start of the war. 
• Insider spoke to three experts who picked some of the most useful weapons in Ukraine's possession.
• These include Storm Shadow missiles and high mobility artillery rocket systems (HIMARS).

For months, Ukraine pleaded with allies to get advanced weapons and armored vehicles that would make a big difference on the battlefield. 

Many countries delivered: Germany sent over Leopard 2 tanks, the US provided Patriot missile defense systems, and the UK gifted a squadron of Challenger 2 tanks.

Now, as Ukraine is in the midst of its counteroffensive to regain crucial territory from Russia, many of these weapons are proving useful.