"The military movements in the disputed territories are irresponsible and are also unnecessarily provocative," said Jalina Porter, a spokeswoman for the US State Department, after the Armenian government denounced an incursion by Azeri soldiers across the southern border.
The United States on Friday urged Azerbaijan to withdraw its forces "immediately" from Armenia after it accused troops from the neighboring country of penetrating its territory. This complaint raised fears of a new outbreak after last year's six-week war.
Azerbaijan denied Armenia's accusations of infiltration and said it only moved border troops into areas under its control.
The United States pointed to reports that Azerbaijan was withdrawing and urged it to do so without delay.
State Department spokeswoman Jelena Porter said military movements in the disputed areas were "irresponsible and unnecessarily provocative." "We hope that Azerbaijan will immediately withdraw all its forces and stop the provocations," he told reporters.
Armenian Prime Minister Nikol Pashinyan asked Russia for military support on Friday, also saying that France was considering putting the issue on the UN Security Council's agenda.
Azerbaijan regained territory controlled by Armenia for decades last year in fighting that left some 6,000 dead.
The United States maintains close ties with Armenia. Last month, President Joe Biden took a historic step by recognizing the mass killings of Armenians from 1915-1917 by the shrinking Ottoman Empire as genocide.
Washington has also sought, however, to maintain relations with Azerbaijan, a major energy player and key partner of Israel, an ally of the United States.
European Union concern
The European Union (EU) declared this Friday that it is closely monitoring the "worrying" events on the border between Armenia and Azerbaijan and calls on both parties to exercise " maximum restraint and reduce the escalation" of tension.
"The delimitation and demarcation of borders must be resolved through negotiations, for the benefit of the security of local populations," said the high representative for EU Foreign Policy, Josep Borrell, in a statement released by the European External Action Service ( SEAE).
Borrell indicated that, on his behalf, the Secretary-General of the EEAS, Stefano Sannino, spoke on Thursday with the Minister of Foreign Affairs of Armenia, Ara Aivazian. This Friday, he spoke with that of Azerbaijan, Jeyhun Bayramov.
The EU's special representative, Toivo Klaar, has also been in contact with the chair-in-office of the Organization for Security and Cooperation in Europe (OSCE) to try to mediate this conflict, Borrell added.
"The EU continues to support a global solution to the conflict and encourages both countries to find peaceful solutions that preserve stability in the region," concluded the Spanish politician.
According to the maps of the Armenian side and the Russian military, the Armenian government maintains that the territory in which the Azerbaijani military is now located is Armenian, and therefore they should leave it. The Azerbaijani government has so far not offered any official comment on the situation.`