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Key inventory markets have fallen sharply amid fears of a additional deterioration in US-Chinese trade relations.
Tensions in Germany's coalition authorities over migration coverage added to traders' uncertainty.
In the opening minutes on Wall Street, the Dow Jones fell zero.85%, whereas the primary indexes in Paris, Frankfurt and Madrid have been all greater than 1% decrease.
However, London's FTSE 100 share index was much less badly affected, dropping zero.29%.
Earlier, shares fell in Asia, following US President Donald Trump's choice on Friday to impose 25% tariffs on $50bn value of Chinese items.
China retaliated, saying it will impose an further 25% tariff on 659 US items value $50bn.
Japan's Nikkei closed zero.8% decrease on Monday, whereas South Korean shares fell 1.1% and different Asian markets additionally declined.
However, inventory markets in China and Hong Kong have been closed for a public vacation.
"Tensions between the United States and China are escalating, and we are not any closer to an agreement being reached. With neither side willing to back down, investors are caught in the middle," mentioned David Madden, market analyst at CMC Markets UK.
European traders are additionally cautious of political elements in Germany, the place Chancellor Angela Merkel has clashed with leaders of her coalition ally in Bavaria, the CSU, over her refugee coverage.
"With the United States-China trade war already creating an uncomfortable trading atmosphere, the brewing political tension between long-time allies the CDU and CSU in Germany has caused some bloody losses in the eurozone," mentioned Connor Campbell, monetary analyst at SpreadEx.