Well Imtiaz Shahid dont add anything at his own, he just copies the material from different articles, newspaper opinions, magazines and off course internet, however, he seldom check veracity of facts mentioned in the articles.
I am not well versant to Caravan because I hav'nt seen it.
However, for quality articles, you people may like see following:
i). quarterly journal of Institute of Strategic Studies Islamabad (
www.issi.org.pk)
ii). quarterly Journal of National Development and Security published by FRIENDS Organization of Mirza Aslam Baig (
www.friends.org.pk)
iii). IPRI Journal published by islamabad policy research institute (
www.ipripak.org/)