Putin weakened by the Ukraine war: Is China reaching for Russia's east?. Trade between the two countries grew to a record high of more than $240 billion last year.
China and Russia share a border more than 4,000 kilometers long. China also benefits from cheap oil and gas imports from Russia and supplies the Russians with goods that can be used for both military and civilian purposes. China can expect that old territories will one day fall into its lap, writes U.S. expert Jan Kallallberg.