aging population, bangladesh political crisis, bangladesh political future under islamists, bellicose, china's demographic challenge, chinese economy, economic implications of china's demographic challenge, gender imbalance in china, global impact of chinese economic slow down, government measures in china to simulate the economy, islamist rule in bangladesh, low fertility rate of china, manila, pension budget strain in china, population decline in china, rising youth unemployment in china, sluggish chinese economy, tokyo, washington, defence, south china