My latest article for The Guardian:
"Russia announces decision to halt export of crucial rocket engines in response to US sanctions over annexation of Crimea
Russia's deputy prime minister, Dmitry Rogozin, has announced it will halt the export of rocket engines crucial to the US military defence and space programmes.
The move marks a serious deterioration in US-Russian cooperation in space, which for two decades had remained largely above Earthly politics. It could prove a serious set back for the ailing US space programme.
The Russian RD-180 engine has been in production since 1999. The US has imported more than forty of them to power its Atlas V rockets into space.
Designed to be expendable, the RD-180s are not recovered and refurbished after use, so a constant supply is needed to keep up with the US launch manifest. ..."
You can read the full story here.