ARTIFICIAL SURFACES WITH INTERWOVEN AND TESSELLATED PATTERNED CONDUCTORS: PROPERTIES AND PHENOMENOLOGY

The features of artificial surfaces composed of doubly periodic patterns of interwoven planar conductors are discussed. The free-standing intertwined quadrifilar spirals and modified Brigid's crosses are presented as illustrative examples to demonstrate the highly stable angular reflection and transmittance response with low cross-polarisation and a broad fractional bandwidth. The main mechanisms contributing to the substantially sub-wavelength response of these arrays are discussed showing that interweaving their conductor patterns provides concurrent control of both the equivalent capacitance and inductance of the unit cell. The effects of dielectric substrate and conductor thickness on the properties of intertwined spiral and modified Brigid's cross arrays are discussed to provide insight in the effect of the structure parameters on array performance.

GAUSSIAN PULSE SCATTERING BY NONLINEAR THUE-MORSE QUASIPERIODIC MULTILAYERS

The pulse mixing and scattering by finite nonlinear Thue-Morse quasi-periodic dielectric multilayered structure illuminated by two Gaussian pulses with different centre frequencies and lengths are investigated. The three-wave mixing technique is applied to study the nonlinear processes. The properties of the scattered waveforms and the effects of the structure and the incident pulses' parameters on the mixing process are discussed.

Country Focus: Russia

The Ukraine crisis focused attention on Russia, and the motivations of its President, Vladimir Putin. Timofey Agarin examines Putin's Russia and argues that only a sustained commitment to parity of interethnic relations and modernisation can improve the country's prospects.

Search for a New International System

The crisis in Ukraine has three separate but closely linked causes, which must be understood before any long-term solution is found. The three causes are unstable post-Soviet borders, Ukrainian difficulties in state- and nation- building, and Russia’s frustration with the post-Cold War status quo, believes Dr Alexander Titov, who insists that the search for a new international system is taking shape through this current crisis in Europe

Status and security: how Russian media is spinning airstrikes in Syria

Even before the Russian air force launched its first strikes over Syria, there was already a Russian presence on the battleground. These were not the spetsnaz, Kremlin’s special forces, but war correspondents from the leading Russian media outlets. This was as clear a sign as any that the Russia’s priority has shifted from Ukraine, where these reporters spent most of the past 18 months, to Syria.

There is, however, no unanimity on Russia’s latest escalation in Syria. As Russian state TV stations report successes of Russia’s high-precision weapons projecting an image of a high-tech Russian military equal to the US, doubts persist about the latest adventure in the Middle East.

19th-century diplomacy can help deal with 21st-century Russia

The West has failed to properly integrate Russia into its worldview since 1991, and there is an obvious vacuum of ideas for how to deal with it. The default reaction is to fall back on the Cold War paradigm - sanctions, containment, and hopes of Russian regime change.

This is folly. There’s no knowing how long it will take for Russia to change tack, if it ever does; nothing guarantees that a new regime in Russia would be any more pro-Western. There’s also apparently no idea how to handle Russia in the meantime, especially while it remains a crucial part of crises like those in Iran and Syria.

Ukraine has shown that the placeholder post-Cold War order Europe and Russia inherited urgently needs replacing. With a ceasefire in place at last, the search for an alternative is on. The Geneva talks in April this year could be its basis; but nothing truly transformative will be achieved until the US, EU, Russia and Ukraine all recognise the need for compromise.

European Union Cross-Border Cooperation as Conflict Transformation:Potential and Limits

Cross-border cooperation as conflict transformation provides a potential strategy for the European Union (EU) to help realise its founding peacebuilding objective. A wealth of cross-border cooperation activity sponsored by the EU spans a quarter of a century. Although the conflict transformation capacity of that cooperation is questionable in some border regions there is evidence to suggest that it has delivered peacebuilding dividends in other border regions. However, EU cross-border cooperation as conflict transformation faces a number of significant twenty-first century challenges including: ghost borders of the communal imagination; EU external border securitization; perceptions of EU and Russian empire-building; and the Mediterranean transmigrant/refugee crisis. It is argued that these challenges pose significant obstacles to EU cross-border cooperation as conflict transformation and undermine the peacebuilding objective of European integration.

Russia and the EU: The Global Cooperation Agenda

Two factors are important for effective cooperation with Russia in the wider world. First, the EU needs to develop a downgraded, ‘values-light’ agenda focused on solving concrete challenges. Second, to achieve the first point, a common minimum set of shared principles needs to be agreed upon. The need for such change is underscored by structural barriers for construct