Within Advocacy Coalition Framework, the set of stuff going on ‘outside’ the subsystem with its coalitions, that can and do impinge… However, not all are ‘shocking’ events, so there is an additional term for that… external shocks
see also – Focussing Events (MSA)
? The ‘landscape’ within MLP, or other interlinking regimes.
Words like interpellation, imbrication, palimpsest are also useful here….