This pledge is aimed at strengthening the UK's defense capabilities in response to perceived threats from "authoritarian states." The previous spending commitment was to reach this target by the end of the next parliament, but Sunak's new promise sets a more definite timeline.

During a visit to Poland, Sunak emphasized that the UK is not on the brink of war but that the additional funding would prepare the defense industry for potential challenges.

The Labour Party also supports the 2.5% target, though it will depend on economic conditions.

Sunak described the current international environment as the most dangerous since the Cold War.

The UK is increasing its defense spending due to growing assertiveness from authoritarian states like Russia, Iran, North Korea, and China.

This increase will not expand the size of the UK armed forces or reverse army size cuts.

The funds will be used to build up the UK's ammunition stockpiles, particularly for artillery shells and missiles.

The war in Ukraine highlighted the need for Nato nations to have sufficient ammunition supplies to avoid running out quickly in case of conflict.

The UK government is providing additional funding to the Ministry of Defence (MoD) to support ongoing programs, including the purchase of new frigates, the development of a new fighter jet, and the modernization of nuclear weapons systems.

These initiatives are costly, and the MoD has been facing financial challenges.

However, the timing of this funding injection, before a general election, also has political implications.