Nuclear arms more prominent amid geopolitical tensions, say researchers
![Nuclear arms more prominent amid geopolitical tensions, say researchers](https://s.france24.com/media/display/380e0cae-1797-11ef-90f3-005056bfb2b6/w:1024/p:16x9/nuclear2.jpg)
The role of atomic weapons has become more prominent and nuclear states are modernising arsenals as geopolitical relations deteriorate, researchers said Monday, urging world leaders to "step back and reflect".