Japanese carmaker Nissan has said it will cut another 11,000 jobs globally and shut seven factories as it shakes up the business in the face of weak sales. Falling sales in China and heavy discounting in the US, its two biggest markets, have taken a heavy toll on earnings, while a proposed merger with Honda and Mitsubishi collapsed in February. The latest cutbacks bring the total number of layoffs announced by the company in the past year to about 20,000, or 15% of its workforce.