ANKARA - The United States has resumed processing visas at its missions in Turkey on a 'limited basis,' the embassy said in an email on Monday, in what could signal a tentative improvement in the ongoing diplomatic crisis between the two countries. A US Embassy worker based in Ankara confirmed the decision to Reuters. Turkey and the United State mutually suspended all non-immigrant visa services on October 8, after Turkey's arrest of a US consulate employee sharply escalated tension between the two NATO allies.