Things may be getting worse for North Korea as neighbours China is taking tougher action.

Major carrier, Air China is suspending its operation to North Korea and the company said it is a business decision.

America's president, Donald Trump had recently visited China where he urged his counterpart Xi Jinping to take stiffer action in ending North Korea’s nuclear programme.

Speaking in a statement, Air China said it cancelled the Beijing to Pyongyang flight route because the "operational situation is not ideal".

"Market conditions will determine the resumption of the flight route," the statement added.

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Air China last cancelled flights to North Korea in April, citing low customer demand, but resumed soon after.

China has denied any political motives behind its flag carrier's suspension of the route.

"The airliners just work out their own operation plans based on the state of operation and the market," foreign ministry spokesman Lu Kang said at a press briefing on Tuesday when asked about the apparent move.

Passengers flying from Beijing to North Korea are now left with just three regularly scheduled flights each week, on the North Korean state airline Air Koryo.

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