Gunshots have been heard inside the Senate of the  Philippines  as tensions escalate over a planned arrest of a top senator. Witnesses reported multiple shots on Wednesday, sending journalists and others scrambling for cover as armed personnel moved through the building. What happened at the Senate? More than 10 soldiers in camouflage had earlier entered the complex, some carrying assault rifles, though it remained unclear who fired the shots or why troops were deployed. The incident comes as Senator Ronald dela Rosa, a key figure in former President Rodrigo Duterte’s drug war , faces a possible arrest warrant from the International Criminal Court (ICC) . Dela Rosa, who has been sheltering in his office since Monday, said his arrest was imminent and called on supporters to mobilize to block any attempt to transfer him to The Hague to face charges of crimes against humanity.…