 The Colombian government maintains a list of people banned from entering Colombia or subject to expulsion; as of January 2019, the list had 200 people with a "close relationship and support for the Nicolás Maduro regime".On 4 August 2018, at least two drones armed with explosives detonated in the area where Maduro was delivering an address to military officers in Venezuela.The Venezuelan government claims the event was a targeted attempt to assassinate Maduro, though the cause and intention of the explosions is debated.