Frontrunning: May 23
- Global stocks see-saw, yields slip as investors get week off to cautious start (Reuters)
- Bayer defies critics with $62 billion Monsanto offer (Reuters)
- Iran has no plans to freeze oil exports, official says ahead of OPEC meeting (Reuters)
- U.S. lifts arms ban on old foe Vietnam as regional tensions simmer (Reuters)
- Anthem, Cigna Privately Bicker as They Seek Merger Approval (WSJ)
- Fed's Bullard sees tight US labor market putting upward pressure on inflation (Reuters)
- A Mystery Deal in Canada Throws Spotlight on Anbang (WSJ)