In a post on X, Tusk claimed that both Konfederacja parties, most of the Law and Justice (PiS) grouping and president Nawrock all wanted Polexit, while Russia, the American MAGA movement and European right-wing parties led by Hungary's Viktor Orbán sought "to destroy the EU".
"For Poland it would be a catastrophe. I will do everything to stop them," he wrote.
Speaking earlier on public broadcaster TVPInfo, Tusk said Poland's right was pursuing an openly anti-European course and that the presidential veto was part of that pattern.
"Those who say this is a prelude to Poland leaving the EU are unfortunately becoming more and more right," he added.
Nawrocki announced he would veto the bill implementing SAFE earlier this week, arguing that Poland should not take on debt through the EU.
Under the SAFE programme, Poland is set to receive nearly EUR 44 billion in low-interest loans for defence spending, with 89 percent intended for domestic arms companies.
The government responded by calling an emergency cabinet session, passing a resolution that authorises the defence and finance ministers to sign the SAFE agreement directly.
According to officials, the deal with the European Commission could be signed as early as April.
Meanhwile, a protest against the presidential veto, organised by the Committee for the Defence of Democracy (KOD), took place outside the Presidential Palace on Sunday afternoon.
(ał)
Source: IAR