Trading off sovereignty. The outcome of Belarus's integration with Russia in the security and defence field. OSW Commentary No. 107, 2013-04-25

Although the Republic of Belarus is constitutionally designated as a neutral country1, it is in fact closely connected with Russia’s own security and defence architecture. Within the Union State of Belarus and Russia, the armed forces are integrated to an extent unequalled in the world. A legacy of the Soviet division of labour, the Belarusian defence industry complex remains structurally dependent on Russia, which is its main raw material provider, outlet for exports and intermediary on world markets. Bilateral military cooperation also builds on the perception of common threats and partly shared security interests. Hence it unfolds regardless of the disputes that sporadically sour relations between Minsk and Moscow, standing out as the main achievement of the Union State – if not the only one.

On Political Union in Europe: The changing landscape of decisionmaking and political accountability. CEPS Essay No. 4, 21 February 2013

This essay discusses how recent developments have modified the existing allocation of tasks between the EU and national levels and the legitimising mechanisms in decision-making by the EU institutions. It examines in turn the increasing differentiation emerging in member states’ participation in EU policies and institutions, the changing configuration of executive powers and its relationship to the community method, the criteria governing the transfer of economic powers from the member states to the Union and the emerging democratic accountability and legitimising mechanisms before both the European and the national parliaments. Some main implications for the future of European institutions are summarised in the conclusions.

Between Irrelevance and Integration? New Challenges to Diplomacy in the 21st Century and the Role of the EEAS. EU Diplomacy Paper No. 8, November 2014

The changing nature of diplomacy poses new challenges for diplomatic actors in the 21st century, who have to adapt their structures in order to remain relevant on the international stage. The growing interdependence and complexity of issues necessitate a more networked approach to diplomacy, while states retain their predominance in diplomacy. The main underlying challenge of modern diplomacy therefore requires finding a balance between traditional and new elements. This paper examines to what extent the European External Action Service (EEAS) meets the new challenges of modern diplomacy and copes with the diverse interests of the other stakeholders involved, namely the institutions and Member States of the European Union (EU). On the basis of a conceptual framework of modern diplomacy and an analysis of the different aspects of the EEAS’ structures, the paper argues that the EEAS does not fully meet the new challenges to diplomacy, since the interests of the other stakeholders put constraints on its free development. The latter therefore have to choose between irrelevance and integration with regard to EU foreign policy and the future of the EEAS.

Distinct mechanisms eliminate mother and daughter centrioles in meiosis of starfish oocytes

Centriole elimination is an essential process that occurs in female meiosis of metazoa to reset centriole number in the zygote at fertilization. How centrioles are eliminated remains poorly understood. Here we visualize the entire elimination process live in starfish oocytes. Using specific fluorescent markers, we demonstrate that the two older, mother centrioles are selectively removed from the oocyte by extrusion into polar bodies. We show that this requires specific positioning of the second meiotic spindle, achieved by dynein-driven transport, and anchorage of the mother centriole to the plasma membrane via mother-specific appendages. In contrast, the single daughter centriole remaining in the egg is eliminated before the first embryonic cleavage. We demonstrate that these distinct elimination mechanisms are necessary because if mother centrioles are artificially retained, they cannot be inactivated, resulting in multipolar zygotic spindles. Thus, our findings reveal a dual mechanism to eliminate centrioles: mothers are physically removed, whereas daughters are eliminated in the cytoplasm, preparing the egg for fertilization.

Coordination of protein and mRNA abundances of stromal enzymes and mRNA abundances of the Clp protease subunits during senescence of Phaseolus vulgaris (L.) leaves

Our objective was to determine the coordination of transcript and/or protein abundances of stromal enzymes during leaf senescence. First trifolioliate leaves of Phaseolus vulgaris L. plants were sampled beginning at the time of full leaf expansion; at this same time, half of the plants were switched to a nutrient solution lacking N. Total RNA and soluble protein abundances decreased after full leaf expansion whereas chlorophyll abundance remained constant; N stress enhanced the decline in these traits. Abundances of ribulose-1,5-bisposphate carboxylase/oxygenase (Rubisco; EC 4.1.1.39), Rubisco activase and phosphoribulokinase (Ru5P kinase; EC 2.7.1.19) decreased after full leaf expansion in a coordinated manner for both treatments. In contrast, adenosine diphosphate glucose (ADPGlc) pyrophosphorylase (EC 2.7.7.27) abundance was relatively constant during natural senescence but did decline similar to the other enzymes under N stress. Northern analyses indicated that transcript abundances for all enzymes declined markedly on a fresh-weight basis just after full leaf expansion. This rapid decline was particularly strong for the Rubisco small subunit (rbcS) transcript. The decline was enhanced by N stress for rbcS and Rubisco activase (rca), but not for Ru5P kinase (prk) and ADPGlc pyrophosphorylase (agp). Transcripts of the Clp protease subunits clpC and clpP declined in abundance just after full leaf expansion, similar to the other mRNA species. When Northern blots were analyzed using equal RNA loads, rbcS transcripts still declined markedly just after full leaf expansion whereas rca and clpC transcripts increased over time. The results indicated that senescence was initiated near the time of full leaf expansion, was accelerated by N stress, and was characterized by large decline in transcripts of stromal enzymes. The decreased mRNA abundances were in general associated with steadily declining stromal protein abundances, with ADPGlc pyrophosphorylase being the notable exception. Transcript analyses for the Clp subunits supported a recent report (Shanklin et al., 1995, Plant Cell 7: 1713--1722) indicating that the Clp protease subunits were constitutive throughout development and suggested that ClpC and ClpP do not function as a senescence-specific proteolytic system in Phaseolus.