The North's balloons were "gifts of sincerity" for South Koreans who "cry for freedom of expression," North Korea said.
The meetings come as Pyongyang seeks to expand its diplomatic engagement after COVID-19 lockdowns.
Kim Jong Un watches North-Korean war-like practice drills after the start of annual combined military drills by the Us and South Korea.
North Korea has said since last week that it had tested "strategic" cruise missiles, implying they may be designed to carry nuclear warheads.
In recent months, the North has tested an array of weapons that include ballistic missile systems that are under development and an underwater drone.
"If the enemy opt for military confrontation ... our army should deal a deadly blow to annihilate them thoroughly," KCNA news agency quoted Kim as saying.
“North Korean leader Kim Jong Un instructed various agencies to find ways to comprehensively support Palestine in the war between Israel and Hamas,” Korea Broadcasting System reported.
The reclusive North has one of the most highly controlled societies in the world, with leader Kim Jong Un accused of using a system of patronage and repression to retain absolute power.
On Tuesday North Korean state media said leader Kim Jong Un had reviewed spy satellite photos of the White House, Pentagon and US aircraft carriers at the naval base of Norfolk.