Even before sanctions cut off access to vital components and technologies for President Vladimir Putin’s defense industry, an internal Russian government review found years of attempts to reduce reliance on imports had largely failed.

Previously unreported assessments show a program with specific targets was put in place from 2019 to slash Russia’s dependence on Western parts for its arsenal by 2025 — everything from radar to advanced submarines to anti-missile defense systems. But an internal review of the plan 10 months before Putin invaded Ukraine found it was falling short on almost every metric.

Conversations with European officials including those familiar with the audit report highlight the protracted struggle by Russian companies and the trade ministry to move away from parts supplied by NATO member states and Ukraine. One of the Russian assessments explicitly warned the state’s defense procurement program could fail under a tougher sanctions regime, a European official said, asking not to be identified discussing sensitive matters.