Most experts, even in Israel, view Iran as striving to become a "threshold country", technically able to produce a nuclear weapon but abstaining from doing so for now.
However, while the plans represent a significant advance on current trends, which would result in as much as 5C of warming if left unchecked, they are not enough in themselves to limit global warming to the 2C threshold that countries are preparing to agree on.
Rick Halperin, a human rights and death penalty expert from Southern Methodist University, noted that high rates of execution are partly explained by unfair trials and the low threshold in countries like Iran and Saudi Arabia: People there are executed for supposed crimes like drug trafficking, adultery, blasphemy and homosexuality. .
Finally, although we used widely adopted WHO promulgated thresholds, some countries may have different thresholds for considering a vaccine cost-effective.
Beyond this threshold, a country that is $1 richer will tend to have a poverty line that is $0.33 higher (see chart).
In view of these apparent or likely thresholds for other European countries the threshold of €50,000 would seem to represent a reasonable assumption in the absence of explicit thresholds for Germany.
More recently the procedure has been applied in saving-investment literature by testing for thresholds in country size (see Ho (2003)).
It is important that the agreement in Lima specify three important threshold issues: (a) countries detail 2025 emissions reduction commitments; (2) countries only propose efforts that are stronger than what they are currently implementing; and (3) a minimum set of information is provided so that we know exactly what countries are proposing for their targets.
The paper on a "fair plan" for climate action describes a timetable for emissions cuts in established and emerging industrial powers that could keep warming beneath the two-degree (Celsius) threshold that many countries have deemed unacceptably hazardous.
