A 'potentially lethal combination' between hot jobs market and trade tensions could unleash inflation, Stephen Roach warns 

There's a growing risk that trade tensions between the world's two largest economies may converge with other factors to disrupt the global economy — and knock the historic U.S. stock market rally off its stride, according to one of the world's leading authorities on Asia.

Yale University senior fellow Stephen Roach is worried the US-China trade war is putting sand in the gears of global supply chains, which has been playing a vital force in keeping price pressures in check. Roach referred to the threat as one of the "more destructive" layers of the trade war for stocks.

"You've got potentially a lethal combination between a hot labor market in an unwinding of the supply chain effects on the global front which could give you a surprising surge in inflation that the Fed is not positioned to really address with its still very, very low federal funds rate," he warned Friday on CNBC's "Trading Nation."

He added: "For every point of slack in advanced economies, the value chains hold down overall inflation by about 9/10s of a point."

Roach, who served as Morgan Stanley Asia chairman for five years, believes Wall Street and policy makers are largely underestimating the impact of the trade tensions. Despite the new deal to replace the North America Free Trade Agreement, Roach isn't optimistic the U.S. is any closer to a resolution with China.

"The whole hope from the Trump administration is that China will be quickly beaten into submission as they did with supposedly Mexico and Canada," said Roach. "The odds of a long disruption are high."

His thoughts came as the 10-Year Treasury Note yield traded at levels not seen in seven years and on the heels of a strong monthly employment report. The Labor Department's September numbers showed unemployment hit 3.7 percent — the lowest level since 1969.

"The world economy could really start to unwind and do so rather quickly," said Roach. "This is no time for complacency."

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Trading Nation is a multimedia financial news program that shows investors and traders how to use the news of the day to their advantage. This is where experts from across the financial world – including macro strategists, technical analysts, stock-pickers, and traders who specialize in options, currencies, and fixed income – come together to find the best ways to capitalize on recent developments in the market. Trading Nation: Where headlines become opportunities.

Michael Santoli

Michael Santoli joined CNBC in October 2015 as a Senior Markets Commentator, based at the network's Global Headquarters in Englewood Cliffs, N.J.  Santoli brings his extensive markets expertise to CNBC's Business Day programming, with a regular appearance on CNBC's “Closing Bell (M-F, 3PM-5PM ET).   In addition, he contributes to CNBCand CNBC PRO, writing regular articles and creating original digital videos.

Previously, Santoli was a Senior Columnist at Yahoo Finance, where he wrote analysis and commentary on the stock market, corporate news and the economy. He also appeared on Yahoo Finance video programs, where he offered insights on the most important business stories of the day, and was a regular contributor to CNBC and other networks.

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