Political instability in Niger resulting from a military takeover that deposed the president this week threatens the economic support provided by Washington to the African nation, U.S. Secretary of State Anthony Blinken said Saturday. Members of the Niger military announced on Wednesday they had deposed democratically elected President Mohamed Bazoum and on Friday named Gen. Abdourahmane Tchiani as the country's new leader, adding Niger to a growing list of military regimes in West Africa’s Sahel region.