Take a look at the $63 million F-16 fighter jet the West has pledged to help Ukraine win the war with Russia

• Denmark and the Netherlands are sending F-16 fighter jets to Ukraine, with US approval.
• The jets aren't likely to arrive until next year as Ukrainian pilots need to be trained first. 
• A military expert warned that there could be issues with maintaining the aircraft.

The US last week gave its blessing for F-16 fighter jets to be transferred from Denmark and the Netherlands to Ukraine once pilots have been trained to fly them.

Ukraine has long coveted the US-made jet as it seeks to bolster its air capabilities in its war with Russia, which has a more advanced air force.