PLUS: How the escalating US-China trade war could hurt New Zealand
Analysis: US trade gap is narrowing and worker productivity is rising.
Investors had hoped the summit would ease tensions.
The Dow's run of eight successive rises is the longest since September 2017.
Opinion: The US president doesn't operate by the normal rules of trade diplomacy.
Opinion: New Zealand will not be immune as President Trump’s trade bluster takes effect.
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