July 7 (Reuters) - President Volodymyr Zelenskiy said on Tuesday that Ukraine had signed three more "drone deals" with Denmark, Estonia and the Netherlands, making available its expertise gained from more than four years of war with Russia.

All the ballistic missiles launched by Russia struck their targets, underscoring Kyiv's need for more U.S. Patriot interceptor missiles, Ukraine officials say.

Russia’s nearly unimpeded strikes are the consequence of a global dearth of interceptors for the U.S.-made Patriot antimissile system.

Russia unleashed waves of missiles and drones at Ukraine, killing at least 22 people. The attacks exposed gaps in the country's air defenses more than four years into Moscow's full-scale invasion.

Crews are racing to find survivors under rubble Russia targets Kyiv in air strikes for the second time in a week.

Ukraine has changed how militaries use Patriot systems. But recent attacks prove that clever adaptations cannot overcome a shortage of interceptors.

Geopolitics are back in focus, with the U.S. retaliating against Iran after several ships were struck in the Strait of Hormuz, and Ukraine hitting Russia.

Russia says it has intensified military operations on the Kharkiv front, claiming to have struck a Ukrainian drone command post with FAB-500 guided bombs near Zolotoy Kolodez. Moscow also said another strike hit a temporary deployment site of Ukraine's 159th Mechanised Brigade near Zakharovka.