Azerbaijani President Ilham Aliyev has said he wants a peaceful resolution to the conflict over the breakaway region of Nagorno-Karabakh.
"Recent developments in the region on the line of conflict show the cease-fire is not stable, it is fragile," Aliyev told a press conference with German Chancellor Angela Merkel in Berlin on June 7. "The status quo is not acceptable."
In early April, a truce halted four days of fierce fighting in and around Nagorno-Karabakh between Armenia-backed separatists and Azerbaijan's military -- the worst fighting seen in the region since a fragile cease-fire deal was reached in the early 1990s.
The Armenian and Azerbaijani presidents renewed last month their commitment to a cease-fire and to a peaceful settlement of the conflict.
Baku and Yerevan have been locked in conflict over Azerbaijan's breakaway region of Nagorno-Karabakh for decades.
Armenian-backed separatists seized the mainly Armenian-populated region from Azerbaijan during a war in the early 1990s that killed some 30,000 people.
Diplomatic efforts to reach a permanent settlement have brought little progress.
Based on reporting by Reuters and Interfax