Complex sentence: Makarov subsequently has chemical bombs transported from Sierra Leone to Europe to ensure his plan succeeds, which are planted and detonated into every major city in NATO affiliated countries on the continent, despite the efforts of an SAS team trying to prevent it in London.
Split into simpler sentences: Makarov subsequently has chemical bombs transported from Sierra Leone to ensure his plan succeeds. The bombs are planted and detonated in every NATO affiliated countries' major cities, despite the efforts of an SAS team trying to prevent it in London.