U.K. Parliament Backs Airstrikes on Islamic State

The UK Parliament has approved airstrikes against the Islamic State in Iraq, with the House of Commons voting overwhelmingly in favor. Prime Minister David Cameron, who strongly advocated for the strikes, cautioned that the mission could last for years. The airstrikes will be conducted independently of the US-led campaign.

What did Prime Minister David Cameron caution about the duration of the mission?

How will the UK's airstrikes be coordinated in relation to the US-led campaign?