The Open Skies Treaty allows countries to carry out unarmed surveillance flights over each other's territory.👀 Signed in 1992 and effective from 2002, it was an effort to build trust between the treaty's 34 signatories.✈️ However, the United States has accused Russia of abusing it and is threatening to withdraw from Open Skies. We spoke to Chatham House's Dr Patricia Lewis to ask more about the treaty, and why it's so important.💬 Read more on this story👉https://www.forces.net/news/open-skies-