5 trends tracked about this subject — the full history, oldest to newest below.
The US has secured an agreement from Ukraine to spare tankers and Black Sea oil infrastructure following drone attacks on Kazakh oil exports.
China's political and scientific elite have headed to the seaside town of Beidaihe, marking the start of the leaders' secretive summer retreat.
A series of drone attacks on oil tankers has forced Kazakhstan to halt crude exports via a strategic Black Sea terminal.
The Caspian Pipeline Consortium has suspended oil loadings after drone attacks targeted tankers carrying Kazakh crude in the Black Sea.
China expels former Politburo member Ma Xingrui over graft and sex charges in a deepening anti-corruption campaign.