ABDI SHEIKH SOMALIA says it has lost confidence in Kenyan troops serving in an African Union (AU) peacekeeping force, in the latest sign of worsening relations between the two neighbours. The friction could strain cooperation in the campaign against the Islamist group al Shabaab in Somalia, where the Kenya Defence Forces provide about 3,600 troops to the AU force. Last month, Somalia cut diplomatic relations with Kenya after accusing it of meddling in its politics. It recalled its diplomats from Nairobi and ordered Kenya's diplomats to leave Mogadishu. The government had lost confidence in the "KDF's ability to support the…