“…It implicitly assumes that advancing from one stage to another is an inherently positive step without accounting for the possibility of nonlinear development. For example, in relation to the accessibility dimension, as noted by Kratseva (2020) and Durand and Perrin (2018), border effects are reduced at times (for example, due to the Schengen Agreement) leading to increased permeability of the border, and at times they are reinforced or reinstated leading to a decrease in border permeability (for example, due to hardening border control in the EU due to the contemporary immigrant issue, in the US due to 9/11, and at the US-Mexico border due to the US presidential election in 2016, or due to EU-Russia sanctions, Brexit, or Covid-19 pandemic). However, a 'resilient' CBRIS would possess capacity to respond to such shocks (or trends thereof) and to reshape its structures and processes, so that neither internal nor external changes result in undesirable instability but rather in desirable renewal.…”