Athletes from the country are not allowed to mingle with 'foreigners'. Even at the Games Village, they are not allowed to hang around with sportspersons from other countries. There are strict dress codes in place as well.
South Korea's President Yoon Suk-yeol, during phone calls with military chiefs, called for "solid mental readiness and practical training" to ensure any North Korean provocations will be met with retaliation, according to a statement from his office.
The North's missile launch comes just days after the country tested a high-thrust solid-fuel engine that experts said would allow quicker and more mobile launch of ballistic missiles, as it seeks to develop a new strategic weapon and speed up its nuclear and missile programmes.