Sidharth Kaushal is Senior Research Fellow in the Military Sciences research group at RUSI. In this capacity, he has worked closely with the Royal Navy and Royal Marines, as well as several NATO Allies’ militaries. Sidharth holds a doctorate in International Relations from the London School of Economics, where his research examined the impact of strategic culture on grand strategy. Paul O’Neill is Senior Associate Fellow at RUSI and was previously Director of RUSI’s Military Sciences research group. His research interests cover national security strategy, NATO and organisational aspects of defence and security, including organisational design, human resources, professional military education and decision-making. He has undertaken operational tours in Iraq, Northern Ireland, Oman, Turkey and Afghanistan, where he was Senior Advisor on Strategy and Policy to the Afghan Ministry of Interior Affairs.