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This is The World in Brief from the Economist.

Our top stories. Arminia said that over 50,000 ethnic Armenians had fled from Nagorno-Karabakh

into the country since Azerbaijan took control of the enclave last week. The figure represents

over one-third of Nagorno-Karabakh's population. Azerbaijan arrested Rubin Vardanian who led the

enclave's separatist government until February, as he tried to flee into Armenia. Azerbaijan said that

192 of its troops had been killed during the military operation to regain full control of Nagorno-Karabakh,

which had been run by Armenian separatists for three decades.

Donald Trump, speaking at a non-union auto parts factory in Detroit, Michigan,

plugged his populist economic agenda and attacked Joe Biden. Mr. Trump is 40 odd points ahead of

his closest rival for the Republican nomination for the presidency. His hour-long speech spilled over

into the start of his party's primary debate, which he opted again to skip.

Travis King, an American soldier who crossed into North Korea in July, was transferred into

American custody after being expelled from the country. Earlier, North Korea said it had completed

its investigation into Mr. King's illegal entry. He fled there after he was held for almost two

months in a South Korean prison for assault. Germany announced tighter controls on its borders with

Poland and the Czech Republic, including, quote, flexible spot checks on those entering the country.

The social Democrats, who had Germany's ruling coalition, have been undergrowing pressure to act

over an influx of asylum applications ahead of regional elections next month. They have fallen

...