During a visit to the UK, Mark Rutte urges persistent and enhanced defence spending to meet alliance targets, including the US-demand for 3.5% of GDP by 2035, stressing the need for sustained funding beyond short-term boosts.

NATO’s secretary-general warns of the most dangerous and complex security environment in a generation and calls for higher UK and European contributions to NATO defenses.

Germany is projected to have a defence budget by 2029 that is twice the size of the UK’s, signaling shifting NATO balances and the ongoing need for UK and European investment to sustain deterrence and cohesion.

Rutte points to growing threats from Russia, the Ukraine conflict, terrorism, Iran, and broader geopolitical shifts as reasons for stronger European and UK investment in both nuclear and conventional capabilities to maintain credible collective defence.

Politically, there is debate over defence commitments and timelines, with Chancellor Healey resisting a firm 3% GDP target by 2030 and later refraining from recommitting interim increases under Burnham’s government.

The UK has pledged to raise defence spending to 2.7% of GDP by the end of the next decade, but current finances limit rapid increases and non-essential training has been halted to protect budgets.

The UK is portrayed as central to building a stronger Europe and NATO, including substantial investments to upgrade the Trident deterrent and conventional forces, with about £3 billion annually in weapons aid to Ukraine.

Rutte stresses Europe’s responsibility to share the burden, noting that at a 2025 Hague summit the UK and others agreed to raise defence spending to match US levels, moving away from the notion that the US would always pay the bill.