NOCs were once big spenders in international upstream business development (BD) but recent activity has slumped. A series of deals gone wrong – exacerbated by the 2014/15 oil price crash – have dampened M&A, with many Asian NOCs, doubling down on the development of local resources. But with M&A valuations attractive – relative to prevailing commodity prices – and financial ratings at all-time highs, the drivers for NOCs to invest in existing portfolios AND fill strategic gaps have never been stronger. Will they step up? In this Insight, we answer the following questions: Chinese NOCs: will they overcome bureucratic red tape to do deals? Asian NOCs: why are they about to reach an inflection point in gas? Middle East NOCs: why are they fast-tracking international expansion? Exploration: what is driving an improvement in NOCs' international performance? M&A: what will the NOCs look to buy?