Review article of recent literature on the Democratic Republic of Congo. (Nzongola-Ntalaja: The Congo from Leopold to Kabila, Trefon (ed): Reinventing Order in the Congo, and Clark (ed): The African Stakes of the Congo War)

By survival in conditions that are murderous, by evading forms of control and de-linking from the system, people in Congo ultimately limit the reach of the power imposed on them. They have to a great extent isolated, and to a lesser degree diminished, the leadership of Congo and the power of the invaders. The forms of economic survival dispute authority by depriving the state (or predatory nonstate actors) of revenue, whilst maximising the opportunities for survival irrespective of – and in defiance of – the coercion to which people are exposed. The violent regimes in Congo have broken the country to the extent that they were able, but the fact that they cannot break it all attests to the resistance against them: for the powerful, as for the powerless, there may be a will, but there has been no way to achieve it completely

Challenging aid in Africa. Principles, Implementation, and Impact

Why do humanitarian principles, human rights and other ‘rules’ espoused by aid organisations apparently fail to influence the reality of assistance delivery, whilst reality does not dint these objectives? Not breaking the rules, not playing the game investigates the international assistance given in countries at war. Presenting evidence from Sierra Leone, Rwanda, the Democratic Republic of Congo and southern Sudan, it finds that appeal to a morality based on rights and principles allows aid staff to justify their operational weaknesses by blaming or discrediting others. The terminology used casts political and military activity as illegitimate, forestalling dialogue, limiting aid organisations’ perception of the contexts in which they work, and ultimately questioning the sincerity of the assistance. The book concludes that people in countries at war are not ‘breaking the rules’ of assistance – as assistance is not meaningfully ‘ruled’ by rights or principles – they are more fundamentally ‘not playing the game’

Probing dark energy with the next generation X-ray surveys of galaxy clusters

We present forecasts on the capability of future wide-area high-sensitivity X-ray surveys of galaxy clusters to yield constraints on the parameters defining the Dark Energy (DE) equation of state (EoS). Our analysis is carried out for future X-ray surveys which have enough sensitivity to provide accurate measurements of X-ray mass proxies and Fe-line based redshifts for about 2x10^4 clusters. We base our analysis on the Fisher Matrix formalism, by combining information on the cluster number counts and power spectrum, also including, for the first time in the analysis of the large scale cluster distribution, the effect of linear redshift-space distortions (RSDs). This study is performed with the main purpose of dissecting the cosmological information provided by geometrical and growth tests, which are both included in the analysis of number counts and clustering of galaxy clusters. We compare cosmological constraints obtained by assuming different levels of prior knowledge of the parameters which define the observable-mass X-ray relation. This comparison further demonstrates the fundamental importance of having a well calibrated observable-mass relation and, most importantly, its redshift evolution. Such a calibration can be achieved only by having at least $\sim 10^3$ net photon counts for each cluster included in the survey. We show that RSDs in the power spectrum analysis carry important cosmological information also when traced with galaxy clusters and the DE FoM increases by a factor of 8. Besides confirming the potential that large cluster surveys have in constraining the nature of DE, our analysis emphasizes that a full exploitation of the cosmological information carried by such surveys requires not only a large statistic but also a robust measurement of the mass proxies and redshifts for a significant fraction of the cluster sample, derived from the same X-ray survey data.Comment: 16 pages, 14 figures,published on MNRA