The United States and its European partners cannot allow Russia to annex Ukraine. Second, if the United States and its European partners fail to deter a Russian invasion, they should support Ukrainian resistance through a combination of diplomatic, military, intelligence, and other means. First, if Russia decides to invade Ukraine to reassert Russian control and influence, there are at least three possible axes of advance to seize Ukrainian territory: a northern thrust, possibly attempting to outflank Ukrainian defenses around Kiev by approaching through Belarus a central thrust advancing due west into Ukraine and a southern thrust advancing across the Perekop isthmus. What are Russian president Vladimir Putin’s objectives? What military options does Russia have, and what might an invasion look like? How should the United States and its allies and partners respond? To help understand these dynamics, this brief asks several questions. Second, an invasion would mark a significant change in international politics, creating a new “Iron Curtain” that begins along Russia’s borders with Finland and the Baltic states and moves south through Eastern Europe, the Middle East, Central and South Asia, and finally to East Asia along China’s southern flank.Ĭonsequently, it is important to understand how Russia could invade Ukraine, how specific political objectives may influence an invasion plan, the challenges an invasion may face, and what options the United States and its European partners have to respond. Even if diplomats reach an agreement, Putin has shown a willingness to dial up-and down-the war in Ukraine and threaten to expand the war, making the Russian threat persistent. If fully committed, the Russian military is significantly stronger and more capable than Ukraine’s military, and the United States and other NATO countries have made it clear they will not deploy their forces to Ukraine to repel a Russian invasion. First, Russia could move its pre-positioned forces into Ukraine quickly. 1 Russia’s threat is particularly alarming for at least two reasons. Putin has complemented this buildup with blunt language that Ukraine is historically part of Russia and that Kiev needs to return to the Russian fold. Russia has deployed offensive weapons and systems within striking distance of Ukraine, including main battle tanks, self-propelled howitzers, infantry fighting vehicles, multiple launch rocket systems, Iskander short-range ballistic missile systems, and towed artillery, as highlighted in Figures 1a and 1b.

Russian president Vladimir Putin continues to threaten an invasion of Ukraine with a major military buildup near the Russian-Ukrainian border and aggressive language. The United States and its European allies and partners should be prepared for an invasion by taking immediate economic, diplomatic, military, intelligence, and humanitarian steps to aid Ukraine and its population and shore up defenses along the North Atlantic Treaty Organization’s (NATO) eastern flank. But a Russian attempt to seize and hold territory will not necessarily be easy and will likely be impacted by challenges from weather, urban combat, command and control, logistics, and the morale of Russian troops and the Ukrainian population. If peace talks fail, the Russian military has several options to advance into Ukraine through northern, central, and southern invasion routes. Responding to Egregious Human Rights Abuses.Building Sustainable and Inclusive Democracy.Family Planning, Maternal and Child Health, and Immunizations.Energy, Climate Change, and Environmental Impacts.Weapons of Mass Destruction Proliferation.Defense Industry, Acquisition, and Innovation.Intelligence, Surveillance, and Privacy.

Hard west scenarios