Proton, Malaysia’s national carmaker, is set to build an assembly plant near Karachi in Pakistan with local partner Alhaj Automotive, in a move that economists believe will bring positives for both nations.The carmaker, which was struggling before Chinese company Geely bought a 49.9 per cent stake in 2017, recently launched a premium SUV believed to be signalling its recovery. Now, its regional ambitions are coming to fruition sooner than expected, even as Geely’s sales within China stutter…