Tens of thousands of opposition supporters marched across the Armenian capital Saturday to push for the resignation of the ex-Soviet nation’s prime minister over his handling of the conflict with Azerbaijan over Nagorno-Karabakh. In six weeks of fierce fighting that ended with a Russia-brokered peace deal on Nov. 10, the Azerbaijani army reclaimed lands that Armenian forces have held for more than a quarter-century. Armenia’s opposition parties warned Prime Minister Nikol Pashinyan there would be civil disobedience across the country if he does not resign by noon on Tuesday. Pashinyan has refused to step down, defending the peace agreement as a painful but necessary move that prevented Azerbaijan from overrunning the entire Nagorno-Karabakh region. More than 20,000 protesters rallied in Yerevan on Saturday, chanting “Nikol ,you traitor!” and “Nikol, go away!” and then marched to the prime minister’s official residence. “The seat of the prime minister of Armenia is currently being occupied by a political corpse,” Artur Vanetsyan, the leader of the opposition party Homeland and the former head of the National Security Service, said at the protest rally. Several priests of the Armenian Apostolic Church joined the protest, denouncing Pashinyan for allowing Azerbaijan to take over some holy sites. Nagorno-Karabakh lies within Azerbaijan but has been under the control of ethnic Armenian forces backed by Armenia since a separatist war there ended in 1994. That conflict left not only Nagorno-Karabakh itself but large chunks of surrounding lands in Armenian hands. In 44 days of fighting that began on Sept. 27, Azerbaijan troops routed the Armenian forces and wedged deep into Nagorno-Karabakh, forcing Armenia to accept the Nov. 10 peace deal that saw the return to Azerbaijan of a significant part of the separatist region. It also obliged Armenia to hand over all of the areas it held outside Nagorno-Karabakh.