Tusk claims the veto undermines Poland's sovereignty.
The EU loan amounts to €43.7 billion.
Tusk's stance could lead to a significant political conflict.
Strategic angle: A power struggle erupted in Poland as Premier Donald Tusk insisted on accessing EU defence funds despite President Nawrocki’s veto.
Tusk claims the veto undermines Poland's sovereignty.
The EU loan amounts to €43.7 billion.
Tusk's stance could lead to a significant political conflict.