Republican and Democratic Senate leaders said that incidents similar to the suspected “directed” radio frequency attacks on U.S. diplomats in recent years appear to be increasing. Sens. Mark Warner (D-Va.) and Marco Rubio (R-Fla.) said they’ve been aware for nearly five years about mysterious attacks targeting U.S. government officials in Havana, Cuba, and elsewhere. Some have speculated that it may be a type of “sonic weapon,” and victims are said to develop illnesses known as “Havana syndrome.” “This pattern of attacking our fellow citizens serving our government appears to be increasing. The Senate Intelligence Committee intends to get to the bottom of this,” the two senators said. Both senators are chairman and vice-chairman, respectively, of the Senate Intelligence Committee. In 2016 and 2017, the so-called Havana syndrome attacks affected about 50 diplomatic personnel, who reported strange symptoms including vomiting, concussions, extreme nausea, and chronic headaches. “The Senate Intelligence Committee intends to get to …