[Reuters] Wall Street down on Saudi concerns, Caterpillar

[BloombergQ] Oil prices fall as Saudi Arabia pledges to play ‘responsible role’ in market

[Reuters] This week’s earnings shine spotlight on China growth risk

[BloombergQ] Europe’s Moment of Truth as Credit Investors Bid QE Farewell

[AP] China-US ties sinking amid acrimony over trade, politics

[CNBC] Turkey’s Erdogan says there’s strong evidence to show that the Khashoggi killing was planned

[NYT] Paul Volcker, at 91, Sees ‘a Hell of a Mess in Every Direction’

[WSJ] Global Stocks Drop on Political Tensions, Worries Over Chinese Growth

[FT] Emerging markets face mounting geopolitical stress