The Saudi border has been perhaps more porous in the past, but with the currentinstability in Yemen the Saudis have certainly tightened up their controls.
过去，沙特边境可能更加疏漏，但是由于也门目前的动荡局势，沙特加强了对边境的控制。
2
The current implosion in Pakistan is just one more reminder of the instability of the greater Middle East
巴基斯坦时局就是大中东地区局势不稳定的又一次警钟。
3
Instability and reasons of peak current control are also expatiated.