The Philippines is at risk of breaching sanctions imposed by the United States if it proceeds with the purchase of grenade launchers from a blacklisted Russian firm, a deal that could test its longtime security alliance with Washington, Channel News Asia reports. Previously, Reuters reported that the Philippines was planning to buy more than 20,000 assault rifles from the United States, but some senators, concerned with Duterte’s human rights record and rising killings, blocked that sale. Duterte in November 2016 announced he was canceling the 26,000 assault rifle purchase by the Philippine National Police, and said the government could get the weapons from another source that would be “cheaper and maybe as durable and as good.”