backed by high oil-prices and a surge in foreign exchange reserves and investment, Russia's economy was damaged following the start of the Russo-Ukrainian War and the annexation of Crimea in 2014, due to the first wave of Western sanctions being imposed. In the aftermath of the Russian invasion of Ukraine in 2022, the country has faced revamped sanctions and corporate boycotts, becoming the most sanctioned country in the world, in a move described as an "all-out economic and financial war" to isolate the Russian economy from the Western financial system. Due to the impact, the Russian government has stopped publishing a raft of economic data since April 2022. Economists suggest the sanctions will have a long-term effect over the Russian economy. Transport and energy Railway transport in Russia is mostly under the control of the state-run Russian Railways. The total length of common-used railway tracks is the world's third-longest, and exceeds . , Russia has the world's fifth-largest road network, with 1.5 million km of roads, while its road density is among the world's lowest. Russia's inland waterways are the world's longest, and total . Among Russia's 1,218 airports, the busiest is Sheremetyevo International Airport in Moscow. Russia's largest port is the Port of Novorossiysk in Krasnodar Krai along the Black Sea. Russia was widely described as an energy superpower. It has the world's largest proven gas reserves, the second-largest coal reserves, the eighth-largest oil reserves, and the largest oil shale reserves in Europe. Russia is also the world's leading natural gas exporter, the second-largest natural gas producer, and the second-largest oil producer and exporter. Russia's oil and gas production led to deep economic relationships with the European Union, China, and former Soviet and Eastern Bloc states. For example, over the last decade, Russia's share of supplies to total European Union (including the United Kingdom) gas demand increased from 25% in 2009 to 32% in the weeks before the Russian invasion of Ukraine in February 2022. Russia ratified the Paris Agreement in 2019. Greenhouse gas emissions by Russia are the world's fourth-largest. Russia is the world's fourth-largest electricity producer. It was also the world's first country to develop civilian nuclear power, and to construct the world's first nuclear power plant. Russia was also the world's fourth-largest nuclear energy producer in 2019, and was the fifth-largest hydroelectric producer in 2021. Agriculture and fishery Russia's agriculture sector contributes about 5% of the