Academic and Turkey specialist at the University of Stockholm Paul Levin commments on Sweden and Finland's bid to join NATO, saying that "the immediate deadline is of course the Madrid summit on the 28th, 29th and 30th. That is a very tight deadline, it’s only two weeks". He warns that if the process is stalled for much longer by Turkey "the unity between Sweden and Finland that we have seen so far may start to crack". IMAGES AND SOUNDBITES