After a series of episodes that have damaged the health of US officials, the secretary of state reported that Washington’s headquarters in Havana could be closed, just two years after its reopening

Of the 21 medically confirmed American victims, some suffer from permanent hearing loss or concussion, while others suffered from nausea, headaches and ringing in the ears. Some have trouble concentrating or remembering common words, the AP reported . Some felt vibrations or heard loud sounds that were mysteriously only audible in parts of certain rooms, while others heard nothing.

When the first incidents were reported in November last year, Washington and Havana were in a cooperative mode, working feverishly to ensure progress on a number of issues, from internet access to immigration rules, before the end of presidency of Barack Obama. Donald Trump’s surprise triumph on November 8 meant that a president who had threatened to reverse the détente soon would be in the lead .

As the United States prepared for a new and unpredictable government, Cuba also faced a turning point.

Fidel Castro passed away on November 25. The dictator had ruled for almost half a century before handing over power to his brother, Raul, in his last years of life. It was no secret in Cuba that Fidel, along with some sympathizers within the government, were not comfortable with Raul Castro’s rapprochement with Washington.