North Korea fired two short-range ballistic missiles off its east coast on Wednesday, South Korea's military said, a day before U.S. Vice President Kamala Harris is set to arrive in Seoul.

Iran PressAsia: The launch came two days after South Korea and U.S. forces conducted a military drill in waters off the South's east coast involving an aircraft carrier. On Sunday, North Korea fired another ballistic missile towards the sea off its east coast.

Wednesday's missiles were launched from the Sunan area of Pyongyang, the North Korean capital, between 6:10 and 6:20 p.m. 0910-0920 GMT), South Korea's Joint Chiefs of Staff said.

They flew about 360 km (225 miles), reaching an altitude of 30 km (19 miles) and a maximum velocity of Mach 6 (4,600 mph or 7,450 kmh), they said, adding a detailed analysis was underway.

The US has also tried to hold joint drills with South Korea over years. This issue also provokes North Korea to launch a number of missiles to show its defence capability.

Following a stop in Japan, Harris will land in the South Korean capital and visit the heavily fortified Demilitarised Zone (DMZ) between the neighbours on Thursday.

The US and South Korea started joint naval exercises on Monday, a day after North Korea fired another short-range ballistic missile.

What the United States has always tried to do is to constitute provocation in Asia and it is fond of meddlesome in the Asian region's affairs. US security policy in the Asia-Pacific region directly affects China’s security interests as well.

It is the US that invented “coercive diplomacy” and excels at coercing countries. Over the years, by imposing economic blockade, unilateral sanctions and other means, the US has practiced coercive diplomacy around the world.

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