I have just had an article published in Ethics & Global Politics entitled 'Revising Sangiovanni's Reciprocity-Based Internationalism: Towards International Egalitarian Obligations.'
The paper considers aspects of international capital ownership and interstate trade and argues that these practices, under my modified version Andrea Sangiovanni's of 'reciprocity-based internationalism' (which attempts to account for when and how egalitarian obligations might be generated through social, political, and economic relations), themselves generate egalitarian obligations. I also work with Thomas Piketty's Capital in the 21st Century in this article.
The full reference is as-follows:
Heaney, Conor, 'Revising Sangiovanni's reciprocity-based internationalism: towards international egalitarian obligations', Ethics & Global Politics, 9, 2016
You can download the paper here, where there is also a more detailed abstract, if you're interested.