The ISIS is winning the war, due to the following reasons:
1. Sunni Arabs, fed up with the discrimination from Baghdad are joining ISIS in large numbers
2. ISIS is receiving funds from Qatar and Saudi Arabia
3. Right now, the total strength of the ISIS is somewhere between 50,000 and 100,000 militants, including large numbers with prior military experience (former Iraqi soldiers, Chechens.etc).
so they are using iraq soldiers also, this is why they have the advantages, they any kind of soldier in their big tropps, they can recruit some strong old green berets or mercenary, or people that have enough experience in war, not to mentions their big numbers of soldiers
ISIS is winning, because we are not really at war with them. We allowed them to take and arm themselves from Iraqi arsenal's.
This ISIS is winning just because of the constant supply of the US-made weapons (delivered either intentionally or unintentionally). In addition to the 2,300 humvees and APCs which were gifted to them in Mosul, the ISIS also got significant deliveries of weapons when various factions of the FSA defected and then merged with them.
why USA is helping them, or why they have access to apc? this gift was something that happened before the isis creation or what?