Complex sentence: In addition to maintaining its anti-Zetas alliance with the Gulf Cartel, the Sinaloa Cartel in 2011 affiliated itself with the Knights Templar in Michoacán; to counter Los Zetas in the state of Jalisco, the Sinaloa Cartel affiliated itself with the Jalisco New Generation Cartel.
Split into simpler sentences: In addition to maintaining its anti-Zetas alliance with the Gulf Cartel, the Sinaloa Cartel in 2011 affiliated itself with the Knights Templar in Michoacán. To counter Los Zetas in the state of Jalisco, the Sinaloa Cartel affiliated itself with the Jalisco New Generation Cartel.