In an unfortunate development, US-led coalition air strikes reportedly killed dozens of Syrian soldiers on Saturday. The US Central Command said the strike was halted "immediately after Russian officials informed the coalition of the possibility that Syrian military personnel and vehicles were targeted". Russia has responded by calling for an emergency UN Security Council meeting. America’s actions could possibly endanger a U.S.-Russia brokered ceasefire. According to Russian officials, the strike over Syria's Deir Ezzour province, an area dominated by the ISIS, killed at least 62 Syrian soldiers and wounded more than 100 people. Despite the announcement of a ceasefire plan, there is little clarity whether it will work. Both global powers have agreed to set up a joint centre to fight militant outfits such as ISIS and the Jabhat Fateh al-Sham (an al-Qaida-linked group previously known as the Nusra Front) and deliver much-needed humanitarian aid. US Secretary of State John Kerry said the Syrian opposition was ready to end its fight against the Assad government, provided the latter held up its part of the deal and concluded military operations in rebel-held areas. However, it seems that the Americans have been unable to fulfil their side of the bargain. Such egregious mistakes by US-led coalition forces could derail the ceasefire plan.