The US military is investigating whether an attack at a base in eastern Syria was an inside job, CNN reported on Monday. “The investigation is ongoing, which may or may not, develop sufficient evidence to identify a perpetrator(s) and have enough evidence to ensure a conviction in a court of law,” the Pentagon said in a statement to CNN, adding: “No further information will be released at this time.” Officials told the US news outletthat the attack happened in the middle of the night, which suggests the perpetrator did not intend to cause mass casualties. The timing, however, suggests the susp…