[bots]

I think its best to look at what Corbyn proposes.

He wants a political settlement in Syria. The theory being that if Syria has a stable government then ISIS will somehow (without conflict) be wiped out.

Everyone talks about how ISIS is an ideology, but when broken down its not. ISIS has an army, thousands of soldiers with a vast array of weaponry, large and small. These troops are spreading themselves across Syria and Iraq, taking over towns and resources as they go. If left unchecked, that army will continue to grow and expand its reach both in Syria and Iraq and into other neighbouring countries. This is fact, because this is what they were doing until the coalition started bombing them.

Since bombing started, it has allowed the kurds to mount a defence of their towns and it has stabilised the situation around and close to Baghdad.

Bombing has achieved this, not negotiating with them. That's why bombing is an important part of the process. No-one is saying bombing alone will resolve it, but it will contribute to the eventual defeat of ISIS.