SINGAPORE: Oil prices slipped from a five-month high on Monday as investors took profits after US President Donald Trump waived sanctions and tariffs on Russia that may lead to more Russian fuel exports. Brent crude futures fell $2.29, or 2.08 percent, to $107.57 a barrel by 09:19 a.m. Saudi time after settling at its highest since May 19 on Friday. US West Texas Intermediate crude was at $99.46 a barrel, down $1.95, or 1.92 percent, after closing at its highest since September 17 on Friday. T