Russia threat to quit ISS
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Russia’s space chief has threatened that Russia could leave the International Space Station programme over sanctions. The Zvezda Service Module boosts the ISS higher when the orbit decays
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Zvezda Service Module

Orbital decay: ISS orbits at altitude of 370-460km. Due to atmospheric drag, ISS loses altitude of 2km per year

Thrusters on Zvezda Service Module and visiting Soyuz spacecraft boost altitude about 11 times each year

Dmitry Rogozin: Roscosmos space agency

RUSSIAN SEGMENT OF ISS 
Soyuz or Progress 
Zvezda Service Module
Zarya Functional Cargo Block (FGB)

INTERNATIONAL
Kibo (Japan) 
Harmony (U.S.)
Destiny (U.S.)
Node 3 (U.S.) 
Columbus (ESA)

Station truss segments and solar arrays not shown


Without Russian propulsion, ISS will be dragged into lower orbit until it disintegrates

Soyuz or Progress
Soyuz or Progress


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Sources: NASA, Eos, Bloomberg, Space.com
Pictures: NASA, Getty Images © GRAPHIC NEWS