While the Caucasus nation might want to reduce its reliance on Russia for a more reliable ally, Western nations have offered moral support but little else.
The announcement, formally ending more than 30 years of separatist rule, came after Azerbaijan regained control of the breakaway enclave in a swift attack a week ago.
The cause of the Monday blast in the breakaway region of Azerbaijan, where thousands have been fleeing for Armenia, was still unclear. Hundreds were wounded.