PARIS - France's foreign minister said on Sunday that questions needed to be asked on whether Turkey was a viable partner in the fight against Islamic State in Syria.

"There are questions that are being asked and we will ask them. It (Turkey) is partly viable, but there are suspicions as well. Let's be honest about this," Jean-Marc Ayrault told France 3 television.

He said he would raise the issue at meeting of the anti-Islamic state coalition in Washington next week.